Cover-Up Bikini T-Shirts. Great for the beach or as night shirts! Each Cover-Up Bikini shirt features designs printed on both front and back. Made of pre-shrunk 100% cotton. Short Sleeves. These Cover-Up Bikini T-Shirts make funny gifts for everyone. All Styles Come in Regular size (up to size 16 Dress Size), or Plus Size (Dress Size 18-22). Six Styles Now available in Kids size - Stars & Stripes, Hula Girl, Purple Sparkle, Hearts Bikini, Hot Pink Bikini, and Leopard Bikini. All Bikini Coverups do display a front and back image.