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Free shipping over $100. Free returns shipping, always.

The Sieve Demi is cut with slightly more coverage on the cup
Honeycomb mesh texture provides smooth support
Nicola, shown here, is wearing a size 32B
Sieve Demi Bra in Peach

Sieve Demi Bra in Peach

A bra that's seamless under white tees and chic without clothes on? It's not impossible, we made it.   
  • Subtly sheer Belgian honeycomb micromesh
  • Velvety plush Japanese elastic underband
  • Heat transferred care label = no itchy tags
  • Silky grosgrain straps softer than you've ever felt
  • Seamless under tees
  • Nicola is wearing size 32B
  • Moderate support and nipple coverage
  • This bra provides a natural shape and typically fits true size
  • Don't like your current fit? Measure your size here
  • Questions? Talk to us: hello@negativeunderwear.com
Free shipping on orders over $100; free returns on unworn bras. If it's your first order and the size or style is off, our customer service team is amazing - we'll work with you to find the right swap so we can get it right on 2nd try - after all, we're on a mission to prove that bras don't have to suck.

Want more info about materials, care instructions or policies? FAQ's or hello@negativeunderwear.com
    $70.00
    A bra that's seamless under white tees and chic without clothes on? It's not impossible, we made it.   
    • Subtly sheer Belgian honeycomb micromesh
    • Velvety plush Japanese elastic underband
    • Heat transferred care label = no itchy tags
    • Silky grosgrain straps softer than you've ever felt
    • Seamless under tees
    • Nicola is wearing size 32B
    • Moderate support and nipple coverage
    • This bra provides a natural shape and typically fits true size
    • Don't like your current fit? Measure your size here
    • Questions? Talk to us: hello@negativeunderwear.com
    Free shipping on orders over $100; free returns on unworn bras. If it's your first order and the size or style is off, our customer service team is amazing - we'll work with you to find the right swap so we can get it right on 2nd try - after all, we're on a mission to prove that bras don't have to suck.

    Want more info about materials, care instructions or policies? FAQ's or hello@negativeunderwear.com

      Pair it with ->

      Cheeky cut is seamless under jeans Cheeky cut is seamless under jeans
      Sieve Brief in Peach $35
      MK, shown here, is a size 26 jeans, wearing a size 1 MK, shown here, is a size 26 jeans, wearing a size 1
      Sieve High-Waist Brief in Peach $45
      Can't beat this shade of pale peachy pink Can't beat this shade of pale peachy pink
      Sieve Thong in Peach $28
      Gauzy sheer fabric shows a hint of what's under Gauzy sheer fabric shows a hint of what's under
      Mynx Muscle Tee in White $60

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      Size Guide

      What size am I in Negative?

      If you already wear a certain bra size most often, you'll probably be the same in Negative - or at least that's the best place to start.

      Need More Help?

      If you've got specific questions, our awesome customer service team would love to help. No question is too small or TMI (trust us, we've heard it all) - hit us up: hello@negativeunderwear.com

      How do I find out what size I am in Bras?

      If you don't like the fit of your current bras, pull out a tape measure and let's figure out what size you are in 4 easy steps

      Step 1: Bra and Tape

      Wear your best-fitting, unpadded, underwire bra and nothing else. Grab a soft tape measure that is in inches.

      Step 2: Band Measurement

      Wrap a tape measure around your ribcage, following the base of your bra band - pull taut so there's no dip in the tape, but not so tight that you create an indent. This number, in inches, is your band measurement. If the number is odd, round up to the nearest even.

      Step 3: Bust Measurement

      Move the tape around the fullest part of your bust, typically at the center of your nips, wrap evenly around your back, holding taut without any dipping. Take this measurement in inches, this is your bust measurement.

      Step 4: Bra Size

      Take your bust measurement (second one) and subtract your band measurement (first one). Each inch difference between your band and bust measurements equals one cup size. The band measurement and cup size combined are your underwire bra size.

      An Example