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A

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B

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44B

C

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D

30D

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DD/E

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Fitting Room

We are here to help you find your perfect fit as we know how good a perfect fitting bra feels
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How to work out your Playful Promises bra size using a tape measure

Step 1

Step 2

Step 1

Step 1: Measure your under band.

Step 2: Measure your over bust. Use a non padded bra to lift breasts into place and then measure the fullest part of the bust. The difference between your band size and over bust measurement will determine the cup size.

Underband:

Inches:

Centimetres:

Overbust:

Inches:

Centimetres:

Step 2

Learn more about how we work out your size

Go back

Shop my bra size

Learn about sister sizes

Sizing Systems:

We use the traditional plus four or five inches system. A lot of fuller bust companies add no inches or 2 inches only rather than the plus four or five. This is really a matter of preference of the company making the product as the actual physical size of the bra will be the same just the size it is called will vary. So for example someone who is a 30H in a brand that uses the newer system would be a 34F in our system. However the actual bras would be similarly proportioned and it is not that you are truly one size or the other.

Neither system is right or wrong but as a customer it is key to know what system the company you are buying from is using so that you get a bra that physically fits you.

Return to the Playful Promises Fitting Room

What is Sister Sizing?

Sister size is a size where the cup volume stays the same despite the band and cup number changing – this is why if for example your bra size is 34C but it is out of stock you could try a 32D or 36B as the cup is made from the same size patterns pieces and uses the same size bra wires – it is just the band which is a different length. As the bra will have 3 rows of hooks and eyes on the end of the band it can often work on the tightest if you size up or on the loosest or with a bra extender if you size down. Use this handy chart to find your two sister sizes.
We recommend you don't go up or down more than one either side though as then the band would be to tight or loose

Click any sizes from this table and click go and it will show you what perfectly playful styles we have in your size in our shop

30A
30B	32A
30C	32B	34A
30D	32C	34B	36A
30DD	32D	34C	36B	38A
30E	32DD	34D	36C	38B	40A
30F	32E	34DD	36D	38C	40B	42A
30FF	32F	34E	36DD	38D	40C	42B	44A
30G	32FF	34F	36E	38DD	40D	42C	44B
30GG	32G	34FF	36F	38E	40DD	42D	44C
30H	32GG	34G	36FF	38F	40E	42DD	44D
	32H	34GG	36G	38FF	40F	42E	44DD
		34H	36GG	38G	40FF	42F	44E
			36H	38GG	40G	42FF	44F
				38H	40GG	42G	44FF
					40H	42GG	44G
						42H	44GG
							44H