Sugababe Heidi Range covers up her curvy derrière on the beach

Singer Heidi Range usually cuts a confident figure onstage with top girl band The Sugababes.

But it seems she's less than confident strolling the beach in a bikini as she covered up most of her curvy body in a flowing skirt.

Heidi sunbathed in the 90 degree heat but seemed quite keen to keep her derriere covered and under wraps at all times where possible with her pink gipsy-style skirt.

Cover up: Heidi Range of top girl band The Sugababes covers up her curvy derriere with a long pink skirt as she holidays in Miami

Heidi, whose band hit the top spot with song 'Woman in the Red Dress' was seen sunbathing on Miami Beach with sister Hayley.

But it seems she was keen to avoid the ever-present paparazzi because as soon as she spotted them, she apparently called hotel security to be escorted back to the hotel.

She was accompanied by two extremely tall security guards who dwarfed the pint-sized singer, as they walked her back to her five star hotel.

Quite why the singer felt the need to cover up is unclear, as she cut a fine figure in her zebra print bikini.

Woman in the pink skirt: Curvy Heidi covers up after leaving the beach in Miami where she is holidaying with her sister Hayley

Earlier Heidi kept cool in the pool but was spotted doing a few sneaky exercises later in the day at the Miami Beach hotel.

The Sugababes completed a gruelling tour of the UK earlier this year, playing in both Glasgow and Edinburgh, and Heidi is obviously determined she will still fit into her Red touring Dress when she gets home.

Male escorts: Heidi walks the line with two security guards from her hotel after spotting prying photographers

Hot chicks: Heidi, Keisha and Amelle of the Sugababes at T4 On The Beach, in Weston-Super-Mare, Somerset last weekend