Sheridan Shares a Nip
Although she's in the Caribbean, it appears that it may have been a tad bit nippy for "Desperate Housewife" Nicollette Sheridan, who was desperate to get some sun for that pasty white flesh of hers. And thanks to the waves in St. Bart's, her nipple caught a few UV rays as well.
When your bikini has less fabric than a handkerchief, it should be no surprise when things slip out.