Lucy Pinder and Imogen Thomas struggle to stay decent in their party outfits

They may have been in separate parts of town, but Big Brother babes Lucy Pinder and Imogen Thomas appeared to be having similar problems.

The busty twosome both appeared to struggle to stay decent in their party outfits as they pitched up at events wearing tight-fitting tops which barely covered their respective assets.

Models and former Big Brother housemates Lucy Pinder and Imogen Thomas, appeared to be competing for best bustline as they partied in London last night

Glamour model Lucy, 25, who become more famous for the fact that she didn't show off her boobs in the Big Brother house, appeared to have no qualms about revealing them in a chest-squeezing lycra top.

She also exposed her slim legs in a pink miniskirt paired with high heeled Christian Louboutin heels as she arrived to party at the Embassy Club in London.

Lucy was the first housemate to be evicted from the celebrity version of the reality show, and clearly wants to make the most of her post-show 15 minutes of fame.

Bust in show: Lucy shows off the form that has made her one of Britain's most sought after glamour models

Meanwhile, across town Big Brother 7 contestant and 'lad's mag' model Imogen Thomas had the same idea as she danced the night away at London's Crystal Nightclub.

Imogen, who had cosmetic surgery to increase the size of her bosom, wore a tight black bustier and 50's style skirt as she stepped out, which no doubt gained her plenty of admiring looks.

The 25-year-old from Llanelli, Wales had a £4,000 procedure to boost her bust from a 32C to a 32DD to aid her modelling career.

Anything you can do: Imogen now has a successful glamour modelling career

She explained at the time: 'I wanted them done because they were falling down a bit too much.

'I decided to get them done after my first topless photo-shoot with Zoo magazine, but there was no pressure to get a boob job.'

Imogen is now a successful l ads’ mag model who has used her high profile to set up a Cardiff nail bar, however it closed after just a few months.

Imogen blamed her busy modelling career for its demise.

Spilling cleavage and micro mini skirts galore as Big Brother has-beens grasp for attention

Their 15 seconds has long ticked over, but Big Brother contestants Imogen Thomas, Chanelle Hayes and Chantelle Houghton proved last night they are more desperate than ever to get attention.

The former Miss Wales Imogen Thomas, who made a rather unmemorable appearance on the reality show in 2006, resorted to a low-cut neckline that plunged past her belly button in an desperate effort to turn heads.

Busting out: Imogen Thomas bares almost all after partying at Movida last night

The 23-year-old was spotted leaving Movida nightclub in London's Soho with Nery Castillo, the Mexican footballer who has just joined Manchester City.

Her efforts were matched by Chanelle and Chantelle, who both opted for micro mini skirts as they arrived Collection across town.

The both turned out for the Miss Great Britain reunion party - despite the fact neither have ever entered the competition.

Clinging to fame: Imogen leads the charge in Soho, while across town Chanelle and Chantelle attending the Miss Britain reunion party last night

No doubt the siren call of free champagne - and inevitable presence of photographers - was enough to get them slipping on their teeny frocks.

Posh look alike and apparent optimist Chanelle is still holding out hope of using her appearance on the show last year to launch a successful pop career.

Talking about her upcoming debut single, she has said: "The song actually sounds a bit like recent Britney.

"To be able to go on iTunes and download my own song is a massive achievement for me. But I'm taking it slowly."

Desperate for attention: Chanelle and Chantelle skipped the Mensa convention for free champagne and photographers

She continued: "I've been putting everything into my music. I've been working 15-hour days and then going home and playing with my gorgeous Pomeranian pup Crumpet and going to bed.

"I've even had to put my plans for a boob job on hold because I can't afford to take three weeks off."

Chantelle, who won Celebrity Big Brother in 2006, had no such trouble clearing her schedule.

She had her bust boosted to Jordan-esque proportions after splitting from her husband, Ordinary Boys frontman Preston, last year.