Before she even went into the jungle, Stacey Solomon said she didn't want to lose any weight while taking part in I'm A Celebrity... Get Me Out Of Here!

But the choice was taken entirely out of the 20-year-old's hands as soon as she stepped on to Australian soil, as the contestants' food supply is determined by the success of the Bushtucker Trials.

And, with multi-phobic nutritionist Gillian McKeith at the helm on the majority of the trials, it's no wonder the campers have been going hungry and have been forced to survive on little more than rice and beans.

A gaunt-looking Stacey displayed her incredible shrinking frame as she took a shower under one of the jungle's waterfalls yesterday.

She's shrinking: Stacey Solomon displayed a much thinner frame as she had a shower in the jungle yesterday

Gaunt: Stacey looked noticeably slimmer than she did ahead of entering the jungle (right)

Compared to photographs of the X Factor star before she went into the jungle, she appears to have lost at least half a stone, with her ribs now jutting out and her face looking noticeably thinner than before.

Ahead of the show's start earlier this month, Stacey said she was keen to maintain her size 10-12 figure.

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She said: 'It wouldn’t be nice if I did come out a size 6-8. I’m such a pig, the thought of not having much food is the thing I have been dreading most!'

Suffering: Playboy Playmate Kayla Collins also looked noticeably thinner (left) thanks to the diet of rice and beans the contestants have been on

Even Playboy Playmate Kayla Collins looks noticeably thinner than when the show began, with her black monokini virtually hanging off her as she stood under the waterfall.

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It's the moment Camp Sheila have been dreading - having their first shower in the jungle.

But after a full day and night without washing, I'm A Celebrity... Get Me Out Of Here! contestant Stacey Solomon led the way for the girls' camp as she stripped down to a tiny pink bikini for a quick dip under the fountain.

And, clearly keen to further her quest to win the nation over by becoming the next Myleene Klass, whose jungle shower in a white bikini is now infamous, Stacey's frilly two-piece left very little to the imagination.

Bikini babe: Stacey Solomon showed off her curves in a pretty pink two-piece as she took her first jungle shower on I'm A Celebrity

Curvy: The 21-year-old looked stunning in the frilly pink and white bikini

The 21-year-old immersed herself in the water for a quick wash, before taking the time to launder her jungle outfit.

And after a while, former X Factor contestant Stacey was joined in the lake by some of her fellow Sheilas, including Playboy Playmate Kayla Collins and Sheryl Gascoigne.

But Stacey definitely had some competition in the Myleene stakes from Kayla, who looked stunning in a black monokini with gold lacing detail on the front.

The 23-year-old tied her blonde hair up for the occasion as she joined Stacey in giving her pink top and khaki shorts a wash.

Swimwear face-off: Stacey was later joined in the water by Sheryl and Kayla

Bounty of beauties: All of the women are tanned and toned

And Sheryl also joined the girls in the water wearing a chic black swimsuit with white detailing.

While the girls have only been in camp for less than two days, they have so far been fairly lucky with the food they have been enjoying.

The five women were last night treated to a delicious meal of kangaroo steak, but they will soon have to rely on their teammates' performances in Bushtucker Trials for food.

Stunning in black: The Playboy Playmate wore a black monokini with gold lacing detail

And Stacey insists she is determined not to lose too much weight because she is proud of her curvy figure.

She told Star magazine: 'It wouldn’t be nice if I did come out a size 6-8. I’m such a pig, the thought of not having much food is the thing I have been dreading most!'

Kayla is also keen to maintain her curves, as she wants to promote her new swimwear line to its best potential.

Asked if she had an array of swimwear to take into the jungle, Kayla said: 'Of course I will be wearing bikinis.

'I have a new swimwear line coming out in 2011 and I will be taking lots of my own outfits.'

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