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PureForm DefineFit Back Smoothing Wireless Push-Up Bra — CoreFlex™

£30.00

£30.00 £30.00

Mid Support

Color

Size

Bust size

UK sizing · noted on your order so we can check your fit ·

Find your size

Two measurements and we'll work out the size to order, plus your band and cup in UK, US and EU.

Underbust Snug around your ribcage, right under your bust cm Bust Around the fullest part, tape level and relaxed cm

Our bras are sized S to 6XL. Use your bust measurement to pick the size, and your band and cup to check the fit.

Which size to order

Size	Bust
XS	78–82 cm31–32 in
S	82–86 cm32–34 in
M	86–90 cm34–35 in
L	90–96 cm35–38 in
XL	96–102 cm38–40 in
2XL	102–110 cm40–43 in
3XL	110–118 cm43–46 in
4XL	118–126 cm46–50 in
5XL	126–134 cm50–53 in
6XL	134–142 cm53–56 in

Band size

Underbust	US / UK	EU
63–67 cm26–27 in	30	65
68–72 cm28–29 in	32	70
73–77 cm30–31 in	34	75
78–82 cm32–33 in	36	80
83–87 cm34–35 in	38	85
88–92 cm36–37 in	40	90
93–97 cm38–39 in	42	95
98–102 cm40–41 in	44	100
103–107 cm42–43 in	46	105
108–112 cm44–45 in	48	110
113–117 cm46–47 in	50	115

Cup size

Bust − underbust	US	UK	EU
2.5 cm1 in	AA	AA	AA
5 cm2 in	A	A	A
7.5 cm3 in	B	B	B
10 cm4 in	C	C	C
12.5 cm5 in	D	D	D
15 cm6 in	DD	DD	E
18 cm7 in	DDD / F	E	F
20 cm8 in	G	F	G
23 cm9 in	H	FF	H
25 cm10 in	I	G	I

Band and cup are a fit reference, not a separate size to order — we note them on your order so we can help if anything needs swapping. US and UK cups match up to D, then differ: a US DDD is a UK E.

Fast shipping to the United Kingdom

Buy two get one Free Add any 3 bras into cart, discount is automatic

The PureForm™ Defineline™ Back Smoothing Wireless Push-Up Bra is a seamless, wire-free push-up bra designed with wide side wings to instantly lift the bust, smooth side bulges, and hide back fat. Perfect for daily wear and all-day comfort, this supportive wireless foundation creates an invisible, line-free look under any outfit.

Built-In 3D Cups

Stay-in-place cups provide natural lift without shifting

Wire-Free Comfort

Delivers all-day support with a zero-restriction feel

Secure Wide Band

Wide underbust band stays securely in place

Adjustable Straps

Customize your fit with comfortable, non-slip straps

Wide Side Wings

Widened wings effortlessly smooth side bulges and back fat

4-Row Back Closure

Hook-and-eye design offers a personalized and secure fit

Why you'll love it!
• Wireless Push-Up: No-wire cups lift and push up naturally for comfortable cleavage without underwire digging.
• No-Shift Fixed Cups: 3D molded cups shape the bust and stop cup shifting or running during movement.
• Back Smoothing: Extended wide wings tuck in underarm spill and smooth out back bulges for a seamless look.
• Customized Support: Adjustable, no-dig straps and hook-and-eye back closure allow you to personalize the fit for all-day stability.

360° Shaped

The fabric effortlessly adapts to your body's contours, providing exceptional comfort and freedom of movement.

Incredibly Soft

Designed to feel gentle against sensitive skin, delivering lasting comfort without irritation.

Ultra Breathable

Moisture-wicking fabric helps keep your skin dry, fresh and comfortable throughout the day.

Keep It Cool

Performance-focused materials help prevent overheating and keep you comfortable for longer.

Size	Bust	Waist	Hips
XS	78–82 cm31–32 in	60–64 cm24–25 in	84–88 cm33–35 in
S	82–86 cm32–34 in	64–68 cm25–27 in	88–92 cm35–36 in
M	86–92 cm34–36 in	68–74 cm27–29 in	92–98 cm36–39 in
L	92–98 cm36–39 in	74–80 cm29–31 in	98–104 cm39–41 in
XL	98–104 cm39–41 in	80–88 cm31–35 in	104–110 cm41–43 in
2XL	104–112 cm41–44 in	88–96 cm35–38 in	110–118 cm43–46 in
3XL	112–120 cm44–47 in	96–104 cm38–41 in	118–126 cm46–50 in
4XL	120–128 cm47–50 in	104–112 cm41–44 in	126–134 cm50–53 in
5XL	128–136 cm50–54 in	112–120 cm44–47 in	134–142 cm53–56 in
6XL	136–144 cm54–57 in	120–128 cm47–50 in	142–150 cm56–59 in

Size	US / CA	UK	AU / NZ	EU	FR	IT
XS	0–2	4–6	4–6	32–34	32–34	36–38
S	4–6	8–10	8–10	36–38	36–38	40–42
M	8–10	12–14	12–14	40–42	40–42	44–46
L	12–14	16–18	16–18	44–46	44–46	48–50
XL	16–18	20–22	20–22	48–50	48–50	52–54
2XL	20–22	24–26	24–26	52–54	52–54	56–58
3XL	24–26	28–30	28–30	56–58	56–58	60–62
4XL	28–30	32–34	32–34	60–62	60–62	64–66
5XL	32–34	36–38	36–38	64–66	64–66	68–70
6XL	36–38	40–42	40–42	68–70	68–70	72–74

Bust − underbust	Cup
7.5–10 cm3–4 in	A
10–12.5 cm4–5 in	B
12.5–15 cm5–6 in	C
15–17.5 cm6–7 in	D
17.5–20 cm7–8 in	DD

Size	Equivalent bra sizes
S	30DD · 32B · 32C · 32D · 34A
M	34B · 34C · 34D · 36A · 36B
L	34DD · 36C · 36D · 38A · 38B
XL	36DD · 38C · 38D · 40B
2XL	38DD · 40C · 40D · 42B
3XL	40DD · 42C · 42D · 44B · 44C
4XL	42DD · 44D · 46B · 46C