So my sister-in-law was complaining about brand new AE tank tops she got at a flea market for a steal, but they were labeled wrong & ended up being a size too small. So I added some lace inserts (you can use any fabric) on the sides, to add some room to your form fitting shirts!
I added a bit of lace on the bust of the one tank to spice it up a little...they ended up fitting her perfectly & she loved them!