You never want something until you can't have it. So, each week in The Sell-Out, we're getting the scoop from your favorite retailers on what's selling like crazy. Watch this space to find out what everyone's buying, sign up for wait lists, and keep tabs on restocks.The search for the "perfect" T-shirt can be a lifelong journey. But when we heard American Giant — the same brand that boasts the perfect hoodie and those fast-selling joggers — was debuting a brand-new tee , we knew it had to be good.American Giant's recently launched Premium T features a crewneck, thicker slub fabric, back seam detail, and it's offered in a range of colors, from your classic white and navy to a dusty pink and army-inspired green. And though these tops only hit the site a few weeks ago, the navy already has 1,000 shirts on backorder, with the other shades quickly following suit.Ringing in under $35, there's really no reason not to give the shirt a try before it's totally wiped out. Ahead, shop this summer must-have — as well as some similar alternatives in case this OG ends up out of stock.