Sugababe Heidi loses her shoe on the catwalk

The hair, make-up and dresses were perfect, the steps had been rehearsed, and the celebrity audience was in place.

But you can't plan for everything. And as Heidi Range and her Sugababe bandmates marched down the catwalk last night she stepped right out of her designer shoe.

The Push The Button singer looked horrified as she realised her fashion faux pas. But, a true professional, she didn't miss a step.

Oops: Heidi's heel slips off as she and Sugababes Amelle Berrabah and Keisha Buchanan walk the catwalk at the Natural History Museum in London last night

In her one remaining shoe the 25-year-old kept up with her bandmates Keisha Buchanan and Amelle Berrabah, although by now she was a good few inches shorter.

One thing Heidi couldn't control, however, was her laughter. The audience joined in as she screamed with amusement at the mistake.

Carry on: Heidi can't control her laughter as she leaves the shoe behind on the runway

Heidi picked up the offending shoe as she headed back down the catwalk

The three bandmates, in their matching metallic pink studded dresses, were taking part in the Fashion for Relief show at the Natural History Museum in London.

The charity show, organised by Naomi Campbell, saw the A list came out in force at London Fashion Week.

If the shoe fits: The singer playfully waves it at the audience

Striding out: The Sugababe girls looked picture perfect as they set off

Sugababe Heidi shows her wild side in her leopard-print bikini in Miami

Sugababes singer Heidi Range took a walk on the wild side yesterday as she flaunted her curvy figure in a leopard-print bikini.

The Liverpudlian pop star, 25, soaked up some last minute rays as she enjoyed the last few hours of her Miami holiday before flying home to Britain.

Heidi and her older sister, make-up artist Hayley, 27, flew to Florida for a week in the sun in between Sugababes festival gigs and studio time.

Late minute rays: Sugababes singer Heidi Range enjoys her last few hours by the pool at her Miami, Florida hotel before flying home

After showing off a variety of different bikinis throughout the week, Heidi opted for a flamboyant leopard-print one for the last day of her vacation.

Choosing such a loud bikini demonstrated the singer had gained in confidence as her tan deepened.

Earlier in the week, a less confident Heidi covered the bottom half of her body with a pink skirt as she joined Hayley on Miami's South Beach.

After the pair started being photographed by paparazzi on the beach, they quickly summoned security who escorted them back to the their five star hotel.

Cool down: Heidi Range cools off from the hot Florida sun in the pool

Heidi has previously admitted she hates being photographed on the beach because it highlights her insecurities.

After she was photographed on the beach holidaying with her TV presenter boyfriend Dave Berry, Heidi admitted the sight of paparazzi made her want to cover up.

She said: 'I'm just the same as anyone else, I don't love my figure or anything, so it's not nice when the press pick up on things.

'There was a picture in the paper of me where I was leaning and they had a close-up of my nipples. Everyone gets that when they lean over on the side!

Sisterly time: Heidi chats to older sister Hayley on the loungers

I went on holiday to Mexico and wouldn't walk around without my sarong on in case they caught a dodgy picture of my a**e.'

Next week, Heidi is set to reunite with her bandmates Amelle Berrabah and Keisha Buchanan for a performance at a charity concert in Dagenham, Essex next week.

The trio are set to resume recording on their sixth studio album, due for release later this year.

Heidi is also looking forward to decorating her new house after recently moving in with long-term love Dave.

With the band: Heidi is set to reunite with her Sugababes bandmates Amelle Berrabah (C) and Keisha Buchanan (R) next week

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