Ms Lisa Snowdon almost suffers a wardrobe malfunction as she hangs out on Miami beach

She's having a welcome break from her 4am alarm calls and Johnny Vaughan's bleary face every morning - so no wonder Lisa Snowdon is making the most of her current Marks and Spencer's modelling mission in Miami.The 39-year-old model is currently taking time off from her 95.8 Capital FM breakfast show to shoot the latest M&S advert for their spring/summer collection in the more clement climate of Florida.However, the star almost showed off more than she intended when she nearly fell out of her bikini whilst taking time out from the shoot on the beach.

Oops! Lisa Snowdon makes some urgent adjustments to her bikini top as she emerges from the surf in Miami

Even when taking time off from her busy schedule shooting the new Marks And Spencer television advert in Florida and chilling on the beach, Lisa looked stunning

The stunner was sporting a bikini with a black top and bottoms sporting a floral print - though she was forced to make some hasty adjustments to her top half to prevent any embarrassing exposure following a dip in the sea.

Lisa is over in the States shooting the advert with Twiggy, 61, Dannii Minogue, 39, VV Brown and Ana Beatriz Barros, 28.She Tweeted: I'm only away for a bit, filming for the new M&S ad! Be back soon on breakfast with Johnny! Miss you and him already! L x'

The model is in Miami to shoot the spring/summer advertising campaign for the high street giant - so we can only presume the bikini is part of the range

Lisa kept fiddling with her swimwear as she strolled along the sand - but the pesky two-piece didn't detract from her stunning looks

Lisa keeps her wet hair out of her eyes as she strolls back to her sunlounger

Johnny is soldiering on behind the mic meanwhile with stand-in host Kat while Lisa is away hard at work in the sun.Dannii has certainly been impressed with the clothes they've been modelling so far, and Tweeted: 'Just to let you know the M&S Spring Summer collection is Uh-Mayzing!'

Lisa with Twiggy modelling some clothes with a slightly nautical air for the M&S shoot in Miami earlier this week

The models strike a pose on the ocean waves for the spring/summer campaign

The girls have been filmed posing in nautical gear on yachts, in their gladrags at a fictional wedding and in swimwear whilst lounging on the beach.The gang appear to having a fun time on the assignment, and have all been socialising during the evenings off the set - they've even brought friends and family in tow, with Dannie bringing partner Kris Smith and baby Ethan However, the team were hard at work last night before Lisa's day at the beach - doing a shoot to simulate a nighttime party, pictures of which Dannii put up on her Twitter account.

Lights, camera...Dannii Minogue posted up this picture on her Twitter yesterday and wrote: 'Let the night shoot begin...'