Fergie [1] put her ripped body on display during a day on the beach in Kauai last week. The "M.I.L.F. $" singer flaunted her figure in a brown bikini and was snapped having a laugh while playing in the waves with a pal. The last time we caught a glimpse of the 42-year-old's bikini body was back in January, when she and husband Josh Duhamel [2] rang in the New Year in Hawaii. [3]