Walmart offers the Suddenly Slim By Catalina Women's Slimming Shirred Halter One-Piece Swimsuit in 23 colors (Red Mini Dot pictured) for $20. Opt for in-store pickup to dodge the $4.97 shipping charge. That's $5 under our mention from two weeks ago, $15 off list, and the lowest price we've seen. It's available in sizes S to XL, although not in all size/color combinations.