This classic silhouette from Chantelle is pretty much exactly what we want out of a basic smooth t-shirt bra. All the function we need: a plunging spacer and a demi shape with the support and coverage of a full cup bra, and just enough pretty details: delicate-but-invisible-under-shirts knot detailing on the straps and cups and tonal graphic mesh overlay. As if that weren't enough, there's a built-in adjustable racer-back convertible strapper and a very welcome price in the 60s.