When I practice Yoga, I like to keep the girls in place. You know when you're in Down Dog and you notice your chest is slowing falling out of your top. Then have to stop to fix your shirt every five minutes. It can really disrupt your concentration and flow. I was so happy when I found this Yoga Trieger Tank ($42) by Hyde.
The straight neckline ensures that everything stays in place. I also love the thicker straps, so you don't have to worry about them sliding off in your Sun Salutations. It has a shelf bra built in, and I love the unexpected V in the back. Another favorite thing is that this tank is long, so when you raise your arms in Tree pose, your bellybutton won't be peeking out to say hello. It's made with a 92 percent cotton/8 percent spandex blend, so this shirt is comfy and soft like your favorite pair of old PJs. I have it in orange, but it comes in tons of colors like chocolate, black, sky, and lilac. This has quickly become one of my favorite tops.