They�re tackling Peru�s Inca Trail to raise money and awareness for Breast Cancer.
But that doesn't mean they can't have fun.
So after a hard day of trekking, Alexandra Burke, Fearne Cotton, Denise Van Outen, Gabriella Cilmi and Total Wipeout�s Amanda Byram stripped to their bikinis and took advantage of a local swimming pool.
Break time: Fearne Cotton took time out from from the celebrity charity trek in Peru to cool off in a local shower today
The group are taking part in the gruelling nine-day charity trek along with six women who have been diagnosed with the disease.
Denise Van Outen used the opportunity to show off her amazing post-baby body in a one-piece, less than six months after giving birth to daughter Betsy.
The 36-year-old did her best Myleene Klass I�m a Celebrity� Get Me Out of Here! impersonation, underneath an outdoor shower.
Meanwhile, Fearne Cotton, 29, showed off her rarely seen figure in a 1950s style black and white two piece.
The presenter revealed a super svelte body, while drinking a nice cup of tea in the pool.
Pool party: Despite the relaxing pool break, the women are actually taking part in a gruelling charity trek
Alexandra Burke, 22, looked to be having the time of her life too as she laughed alongside Denise in the shower, while revealing her toned body in an orange bikini.
And Amanda Byram stunned in a skimpy white string bikini alongside her fellow celebrities.
Fearne had been regularly updating her Twitter page while in Peru but ran out of phone reception two days ago.
Before informing her followers that her phone was about to cut out, she revealed: �You will get to see our adventure on ITV2 in Oct too! I�ll let you know the date when we are home!�
Bikini babes: Amanda Byram (left) and Denise Van Outen (right) show off their incredible figures by the pool
Tea time: Fearne enjoyed a warm cup of tea in the pool and has managed to keep her nail polish in impeccable condition despite being on the trek
She also promoted the trek T-shirts which are on sale at very.co.uk to raise money for breast cancer and revealed her difficulty with the high altitude.
�Feeling quite out of it and tired from the altitude already as Cusco is 11,000 ft up. Hoping I don�t get sick like last time,� she posted.
The group will reach 13,000ft above sea level during the trip, camp in sub-zero temperatures at night, hike over snow-capped mountains and face the sweltering heat of the rainforest.
