Basic Bikini Cup Tutorial

One of the very first things I tried my hand at when I began crafting more complex crochet projects was the bikini top. It seemed like such a doable project, in a relatively short amount of time, and for great rewards – something totally cute to wear that I MADE!

Well, once I started I never did stop trying variations of these, and I became fascinated with the different ways these comfortable and fun projects could be shaped. I followed other patterns, looked at charts and countless examples on Pinterest, and made many of my own including some for which I formed specific designs and published as PDFs!

(Pictured above: The Basic Bralette)

But it was the popularity of the Basic Bralette Tutorial that spurred me to finally create a general Bikini Cup tutorial. Much like with the bralette design, the Basic Bikini Cup Tutorial is meant to be a jumping-off pattern from which you can experiment with your own unique variations.

For the Basic Bikini Cup Tutorial, we’re going to give a bunch of examples and show how cup shape and size can be modified by varying stitch height and increases.

Hopefully this is a good overview useful for both seasoned crocheters as a quick reference and for newbies who don’t know where to start. If you like this tutorial and want to save it, give it a fave on the Ravelry design page!

I’ve included photos, written instructions, AND how-to videos with examples of the strategies used to create one-of-a-kind halter tops and bikinis out of these customized cups ❤ I hope you love!

Check out these other halter top patterns from Morale Fiber or keep scrolling for the FREE Basic Bikini Cup Tutorial!

Basic Bikini Cup Tutorial

Notes:

-Cups are worked by stitching up one side of the foundation row, increasing at the peak (or end) and stitching down the other side. These rows are turned and worked back and forth, placing the increases at the central top for every row.
-First row counts as the foundation row, not Row 1 – be careful when counting your rows. I find it easiest to count by the number of increases.
-Beginning chain does not count as first stitch
-Cups can be worked to desired size by adding rows that maintain the established pattern
-Cups can be put together in a multitude of ways – crochet around them and experiment with inventing unique halters of your own – I tried to include lots of inspiration photos!
-The following includes the pattern of three basic size/shape options, which illustrate the different ways to modify size. Mix and match the strategies as shown to create a custom fit ❤
-Find video tutorial instructions on creating your own unique halter below the written patterns & check out the examples provided throughout! 🙂

Size and shape are determined by manipulating the following factors:


1. Stitch height: Here I’m working with single crochet (sc), half double crochet (hdc) and double crochet (dc)
2. Foundation Length: The number of stitches that make up the central row to be stitched around. I stick within the range of 10-15 normally but it can be any amount.
3. Increase Style: Increases are placed at the central peak of the cup – here I’m either adding +4 stitches per row (2 stitch, 1 chain, 2 stitches increases – where the chain does not count) or +2 stitches per row (1 stitch, 1 chain, 1 stitch increases).
4. Number of Rows: How many rows of stitching are made.

I make a few size recommendations below each cup – but just be aware that you can make any of these to any size desired, depending on how you finish them.

Single Crochet Cups

Stitch: SC
Foundation #: 10
Increases: (1 sc, ch 1, 1 sc)

Ch 11 – (10 chain stitches for the foundation stitches, + 1 extra for the turn)

Foundation Row: Sk first ch st, 1 sc in the 2nd ch from the hook and in each of the next 9 ch sts. – 10 sc

Row 1: Ch 1 (does not count as first sc), turn. 1 sc in the same st. 1 sc in ea of the next 9 sts. In the end of the foundation row, working into the 1 ch st left over from the foundation, work (1 sc, ch 1, 1 sc). Rotate the row so as to work down the opposite side, into the initial foundation chain (working the bottom loops). 1 sc in ea of the next 10 sts. – 22 sc

Row 2: Ch 1 (does not count), turn. 1 sc in the same st. 1 sc in ea of the next 10 sc. (1 sc, ch 1, 1 sc) in the next ch-1 space. 1 sc in ea of the next 11 sts. – 24 sc

Row 3: Ch 1 (does not count), turn. 1 sc in the same st. 1 sc in ea of the next 11 sc. (1 sc, ch 1, 1 sc) in the next ch-1 space. 1 sc in ea of the next 13 sts. – 26 sc

Row 4: Ch 1 (does not count), turn. 1 sc in the same st. 1 sc in ea of the next 12 sc. (1 sc, ch 1, 1 sc) in the next ch-1 space. 1 sc in ea of the next 14 sts. – 28 sc

Row 5: Ch 1 (does not count), turn. 1 sc in the same st. 1 sc in ea of the next 13 sc. (1 sc, ch 1, 1 sc) in the next ch-1 space. 1 sc in ea of the next 15 sts. – 30 sc

Row 6: Ch 1, turn. 1 sc in the same st. 1 sc in ea of the next 14 sc. (1 sc, ch 1, 1 sc) in the next ch-1 space. 1 sc in ea of the next 16 sts. – 32 sc

You can continue on in this pattern for as many rows as you like, maintaining the same method of increasing in the central ch-1 and working 1 stitch in every other stitch.

Above: Two single crochet style cups. Left – Foundation 10 sts, +2 / (1sc, ch 1, 1 sc) increases.
Right – Foundation 5 sts, +4 / (2 sc, ch 1, 2 sc) increases.

I worked the SC, +4 increase style cup for 9 rows to make the top shown below. This pattern makes a very small, flat cup and is appropriate for A cup sizes.

And Sc, +2 increases and 9 rows to make this top – I recommend this cup for A-B size busts.

Half Double Crochet Cups

Stitch: HDC
Foundation #: 10
Increases: (2 hdc, ch 1, 2 hdc)

Pictured Above, from left to right:
1. HDC, Foundation 10 sts, +2 / (1 hdc, ch 1, 1 hdc) increases.
2. HDC, Foundation 15 sts, +2 (1 hdc, ch 1, 1 hdc) increases.
3. HDC, Foundation 10 sts, +4 (2 hdc, ch 1, 2 hdc) increases.

Ch 12 – (10 chain stitches for the foundation stitches, + 2 extra for the turn.)

Foundation Row: Sk first 2 ch sts. 1 hdc in the 3rd ch from the hk and in ea of the next 9 ch sts. – 10 hdc.

Row 1: Ch 1 (does not count as first hdc), turn. 1 hdc in the same st. 1 hdc in ea of the next 9 sts. In the end of the foundation row, working into the side of the 2 chains left over from the foundation, work (2 hdc, ch 1, 2 hdc). Rotate the row so as to work down the opposite side, into the initial foundation chain (working the bottom loops). 1 hdc in ea of the next 10 sts. -24 hdc

Row 2: Ch 1 (does not count), turn. 1 hdc in the same st. 1 hdc in ea of the next 11 hdc. (2 hdc, ch 1, 2 hdc) in the next ch-1 space. 1 hdc in ea of the next 12 sts. – 28 hdc

Row 3: Ch 1, turn. 1 hdc in the same st. 1 hdc in ea of the next 13 sts. (2 hdc, ch 1, 2 hdc) in the next ch-1 space. 1 hdc in ea of the next 14 sts. – 32 hdc

Row 4: Ch 1, turn. 1 hdc in the same st. 1 hdc in ea of the next 15 sts. (2 hdc, ch 1, 2 hdc) in the next ch-1 space. 1 hdc in ea of the next 16 sts. – 36 hdc

Row 5: Ch 1, turn. 1 hdc in the same st. 1 hdc in ea of the next 17 sts. (2 hdc, ch 1, 2 hdc) in the next ch-1 space. 1 hdc in ea of the next 18 sts. – 40 hdc

Row 6: Ch 1, turn. 1 hdc in the same st. 1 hdc in ea of the next 19 sts. (2 hdc, ch 1, 2 hdc) in the next ch-1 space. 1 hdc in ea of the next 20 sts. – 44 hdc

You can continue on in this pattern for as many rows as you like, maintaining the same method of increasing in the central ch-1 and working 1 stitch in every other stitch.

Cups made with either +2 increases or +4 increases in HDC are my all-purpose cup pattern. They really do well with most bust sizes, have good proportional qualities, and are a good place to start if you don’t know your preferred size exactly.

In this YouTube video, I show how to work the HDC, +4 increase style step by step – but it’s a good example of the techniques no matter what stitch and increase combo you use! Check it out:

I used HDC, +4 increases to make this top:

The crocodile stitch scale portion that I worked onto the bottom of the cups is from my Feather & Scale Halter Top crochet pattern! 🙂

Double Crochet Cups

Stitch: DC
Foundation #: 15 (+2)
Increases: (2 dc, ch 1, 2 dc)

Pictured Above: 1. (Top) – DC, Foundation 15 sts, +4 / (2 dc, ch 1, 2 dc) increases.
2. DC, Foundation 5 sts, +4 / (2 dc, ch 1, 2 dc) increases.

Ch 17 – (15 for the foundation sts, + 2 to turn)

Foundation Row: Sk first 2 ch sts. 1 dc in the 3rd ch from the hk and in ea of the next 14 ch sts. – 15 dc.

Row 1: Ch 2, turn. 1 dc in the same st. 1 dc in ea of the next 14 sts. In the end of the foundation row, working into the side of the 2 chains left over from the foundation, work (2 dc, ch 1, 2 dc). Rotate the row so as to work down the opposite side, into the initial foundation chain (working the bottom loops). 1 dc in ea of the next 15 sts. – 34 dc

Row 2: Ch 2, turn. 1 dc in the same st. 1 dc in ea of the next 16 dc. (2 dc, ch 1, 2 dc) in the next ch-1 space. 1 dc in ea of the next 17 sts. – 38 dc

Row 3: Ch 2, turn. 1 dc in the same st. 1 dc in ea of the next 18 dc. (2 dc, ch 1, 2 dc) in the next ch-1 space. 1 dc in ea of the next 19 sts. – 42 dc

Row 4: Ch 2, turn. 1 dc in the same st. 1 dc in ea of the next 20 dc. (2 dc, ch 1, 2 dc) in the next ch-1 space. 1 dc in ea of the next 21 sts. – 46 dc

Row 5: Ch 2, turn. 1 dc in the same st. 1 dc in ea of the next 22 dc. (2 dc, ch 1, 2 dc) in the next ch-1 space. 1 dc in ea of the next 23 sts. – 50 dc

Row 6: Ch 2, turn. 1 dc in the same st. 1 dc in ea of the next 24 dc. (2 dc, ch 1, 2 dc) in the next ch-1 space. 1 dc in ea of the next 25 sts. – 54 dc.

You can continue on in this pattern for as many rows as you like, maintaining the same method of increasing in the central ch-1 and working 1 stitch in every other stitch.

I used the DC, +4 increases style cups with the 5-stitch foundation length to make this bikini! DC stitch cups get wider faster (because of stitch height) and are therefore a great choice for fuller busts.

DC, +4 increases with a foundation length of 15 makes a much bigger cup, as you can see in this halter top (I’m a B-ish cup but it could easily fit a larger chest)

Finishing Your Bikini

There are a lot of different strategies for completing a crocheted top once both bikini cups have been made. First, you’ll need to attach them, which I usually do by crocheting across the bottom of one cup, then directly onto the bottom of the other as one row.

From there, you can crochet rows off the side, work in rounds, add straps, and create other features such as decorative stitching an added motifs. Here’s some side views of completed tops to show the bands and straps:

The video demo below shows how to crochet a bottom band to attach the cups, as well as some of my strategies for creating a finished top including creating bands and straps. I also show in more detail the types of finishings on the tops pictured above 🙂

By utilizing the different lengths of foundation stitch, stitch height, and number of increased stitches, this style of bikini cup can be made exactly as you like! I hope this tutorial and explanation is useful, and if you have specific questions be sure to leave a comment! ❤

Thanks – and don’t forget to get out (safely) into the sunshine!

-MF

7 thoughts on “Basic Bikini Cup Tutorial

  1. Pingback: Basic Bralette Tutorial | Morale Fiber

  2. Hello, I love your beautiful free patterns! Many thanks for the great pictures and explanations. It is easy to follow. You are such a talented young designer. I envy you. Keep up the stunning stuff! My daughters and granddaughter really love it all. 🙂

    Like

  3. These are lovely – just as a matter of interest, I saw on YT a video that says that in order to determine the correct number of foundation stitches, measure your boob from the bottom of the boob – where boob meets rib cage to the nipple and that is the length of the foundation stitches, could prob measure from the side too.

    Like

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