Give Me a Gym Makeover

A friend of mine overheard on the subway the other day someone claiming that "the gym is the new office." I think it's kind of hilarious, and very possibly true. I feel like I've been living at the gym of late, if only because it's a sound economic decision (every time I go to a spin class it gets closer to being free!), and it provides some of the best people-watching in the city. I have about 10 pairs of Lululemon yoga pants since I strongly believe they make the most flattering options on the market, but I lose all inspiration when it comes to tops. In general, I've been wearing some variation on the Lucky logo tee (hard-won at various in-store events). I just don't want to spend $50 on a Lycra tank, even though the idea of a built-in sports bra is wildly appealing. Do you guys have any secret—and supportive—sources? I've been eyeing these Long and Lean Champion tanks at Target.