Walmart offers the Suddenly Slim By Catalina Women's Slimming Shirred Halter 1-Piece Swimsuit in 20 colors (Coral Burn pictured) for $20. Opt for in-store pickup to dodge the $4.97 shipping charge. That's $15 off list and tied with our mention from a week ago as the lowest price we've seen. It's available in sizes S to XL, although not in all size/color combinations.