When Marie casts her eye over my choice of sports bra in the ladies change room after class, I know I’m in trouble.
Or I’m about to get some great advice, like where to buy sports bras with actual underwires in them in France. (She works for a lingerie company, huzzah!)
Marie has published a super useful guide to sports bras on her blog. Give it a read, and share it with all your newbie classmates when you see them wearing lacy, impractical bras under their gis.