We all know that no matter where you buy your bras from, every single one can fit differently, so, unfortunately, theres never going to be a definitive answer to that what size question. Sigh!
However, there is a saving grace in the form of the DIY fitting. Hoorah!
28 PROBLEMS ONLY GIRLS WITH BIG BOOBS WILL UNDERSTAND
Identifying how your bra should fit and understanding how everything should fall into place means youll be able to get the right one - wherever you shop. Plus, it eliminates the need for those somewhat awks one-to-one consultations. A definite added bonus!
Marks and Spencer are the bra fitting gurus of the highstreet, and it's their recommendation that you check your bra fit every 6 months. This may seem excessive, but the rate at which your body can change means that those sets you bought half a year ago could be completely wrong for you now. Exhausting, yes?
Well luckily it neednt be so anymore!
SUMMER EDIT: THE 50 BEST SWIMSUITS FOR EVERY FIGURE
Take notes as we take you through the M&S guide to check if your bra fits A-OK and get as supported as Rosie HW...
Underband
Go down a back size if: Your breasts are showing beneath the underband or the underband is riding up your back
Wires
Go down a cup size if: The wires are slipping down your body, towards your waist
Cups
Go down a cup size if: The cups are wrinkling or gaping
Straps
Tighten your bra straps if: They are slipping off your shoulders or if you have narrow shoulders, avoid balcony bras as these have wide-set straps
Check out this full demonstration from M&S lingerie expert Julia Mercer and get practicing girls: