Not every Hollywood star steamed up the shoreline in 2011 in high style!

As part of our year-end ON YOUR RADAR roundup, RadarOnline.com has photos of all the a la mode mishaps on the shoreline, with the 10 biggest bikini fashion flops of 2011.

PHOTOS: Biggest Bikini Flops Of The Year

Reese Witherspoon may be gorgeous and hot-bodied, but that doesn’t mean she always hits the high note with her stripped down style sense. While vacationing in Hawaii with her family, Reese took the plunge and put her pieces on display in a lowcut one-piece, pairing it with totally unsexy boy shorts!

Every time a celebrity puts on a barely-there bikini they are taking a huge risk!

From nip-slips to attack of the underboob, Hollywood’s hottest stars have fell victim to bikini blunders on the beach time and time again. RadarOnline.com has even more photos of celebrities and their most embarrassing moments in their bikinis!

PHOTOS: Bikini Bloopers! More ‘Oopsies’ On The Shoreline

Sporting sun block on the beach is one thing, but foodie Nigella Lawson went radical on us!

PHOTOS: Nigella Lawson Cooks Up Beach Blunder

Food Network host Lawson, 51, made a splash on Australia's Bondi Beach today when she hit the surf covered from head to toe in a baggy black Ensemble!

Strangely, the deliciously-curved Brit was accompanied by a friend wearing a more classic bikini.