Frankie's Bikini Tia Ribbed Triangle Set (XS Top, S Bottom) - New! Navy Brand new with tags detached. Frankie's Bikini Tia Ribbed Triangle Bikini set in a stunning navy blue. Never been worn, but tags were removed. Triangle top features a flattering tie neck and back closure, while the ribbed material offers a comfortable and supportive fit. Size XS for the top and size S for the bottom. Perfect for your next beach trip!