LuluLemon black tank

As you can see, this is a hot tank. A bit too much boobage going on for me though - and I'm sure for my teenage sons. Hubby? He'd probably say "keep it!!!" It crosses over in front at the bra area and there is a band, as if a bra band. So, it cinches it all IN and UP and if you have a lot if it - OUT. Thru my torso it fits perfectly and I'm a size 2 in regular clothing. So, I'm guessing this is a Lulu 4, but I don't see the size anywhere? Excellent condition. Barely wore before I was too big.