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They're beach body ready! Miss Universe hopefuls flaunt their super-trim figures in skimpy swimwear... before covering up in show-stopping sequin gowns

Miss Universe competition is taking place at Planet Hollywood Resort & Casino on Las Vegas' famous strip. 

Competitors faced the Yamamay swimwear round and then stormed the runway in dazzling evening dresses.   

Earlier today, the models donned elaborate costumes inspired by their country's national dress.

All eyes were on 22-year-old Miss Colombia's Paulina Vega as she stepped out of a chauffeur-driven car in a floor-skimming gold sequin dress with spaghetti straps and an emerald-studded headpiece.

Miss Vega is only the second woman from Colombia to win the crown in the competition's 63 year history. Moments after her historic win, people in her home country flooded the streets and danced in celebration. President Juan Manuel Santos also declared a national holiday in her honor.

Eager to scoop the prize again is this year's entry for Colombia, 21-year-old Ariadna Gutierrez Aréval. She was spotted flashing a peace sign at the waiting press and giving the cameras a thumbs up.

Blowing kisses, Peru's Miss Spoya dazzled in a sparkling green dress with a daringly low-cut neckline, pictured left, while last year's winner Colombia's Paulina Vega, right, wows in a floor-length gold sequin gown.

The excitement was clear to see as glamorous women from 81 nations arrived in Las Vegas, ready to battle it out for the coveted crown.

The women were all smiles on the steps of Las Vegas' Planet Hollywood Resort & Casino ahead of the contest on December 20.

Miss Italy's Giada Pezzaioli beamed warmly at the crowds as she took to the runway in a plum-coloured triangle bikini and matching briefs.

Miss Georgia's Janet Kerdikoshvili, pictured left, and Miss Norway's Martine Roedseth, right, dazzled during the swimwear round.

Miss Montenegro's Maja Cukic, pictured left, brought the glamour in a striped black and white two-piece while Miss Sweden's Paulina Brodd, right, opted for a pretty lace design.

Perfectly-polished Miss USA's Olivia Jordan flashed a cheeky smile at the judges as she paraded around in her floral two-piece.

Miss Spain's Carla Barber, pictured left, and Miss Finland's Rosa-Maria Ryyti, right, looked like they could be sisters with their matching deep bronzed tans, gold hooped earrings and pearly white smiles.

Miss Universe hopefuls have flaunted their super-trim figures in skimpy swimwear for the competition's hotly-anticipated bikini round.

Miss Bulgaria's Radostina Todorova, pictured left, threw a wide grin at spectators while she stormed down the catwalk in her floral two piece while Miss Ukraine's Anna Vergelskaya, right, was seen proudly posing with her hand on her left hip.

Miss Denmark's Cecilie Feline Wellemberg led the charge down the runway, closely followed by Miss Czech Republic Nikol Svantnerova.

Sofía Vergara lookalike Ariadna Gutierrez is hoping to win the Miss Universe crown for her home country of Colombia.

Miss Norway's Martine Rodseth, pictured left, Miss Montenegro Maja Cukic, center, and Miss Georgia Janet Kerdikoshvili, right.

It was a case of 'who wore it best' for Miss Czech Republic Nikol Svantnerova, pictured left, and Miss Turkey's Melisa Uzun, right, who opted to wear the same blush-colored swimwear.

Miss Great Britain's Nena France opted for an almost bridal look with her white lace dress that had intricate embellishment around the bust.

Miss Sweden's Paulina Brodd, pictured left, and Miss Belgium's Annelies Toros, right, pulled out all the stops during the dress round.

Miss Georgia's Janet Kerdikoshvili pulled her flowing brunette locks into an elegant ponytail and kept her make-up simple.

Miss Denmark's Cecilie Feline Wellemberg, pictured left, and Miss Ireland's Joanna Cooper, right, dazzled audiences with their frocks.

Miss Italy's Giada Pezzaiol, pictured left, opted for a black beaded dress while Miss Croatia's Mirta Kustan, right, wowed in midnight blue.

Miss France's Flora Coquerel competes on stage during the evening dress round of Miss Universe 2015 in Las Vegas.

Both Miss Ukraine's Anna Vergelskaya, pictured left, and Miss Montenegro's Maja Cukic, right, decided to rock the bridal look.

Also battling to win the diamond tiara is Miss Greece's Mikaela Eleni Fotiadi, pictured left, and Miss Finland's Rosa-Maria Ryyti, right.

Miss Norway's Martine Roedseth, pictured left, and Miss Poland's Weronika Szmajdzinska, right, helped bring the glamour.

Miss Uruguay's Biana Sanchez took to the catwalk in a bright red bosom-enhancing corset, which was embellished with bold sequins.

Miss USA's Olivia Jordan flashed the crowd a peace sign as she stepped out in a fringed garment, which proudly displayed the colour's of her country's national flag.

Miss Singapore's Lisa Marie White looked blooming lovely in her pretty floral design. Ornate pink flowers and a Baroque-print dress.

Miss Argentina's Claudia Alexis Barrionuevo had to shuffle down the runway due to the weight of her hefty feather back piece. Looking like a mythical goddess, Ms Barrionuevo donned a gem-studded bra and carried a masquerade mask.

Miss Costa Rica's Brenda Castro wore a fruit tree outfit and carried a basket full of red berries. A white bralet top and super-short puffball skirt ensured she didn't get hidden amongst the foliage.

Miss China's Yun Fang Xue, pictured left, and Miss Australia's Monika Radulovic, right, also dazzled audiences with their striking costumes.

Miss India's Urvashi Manvar Singh Rautela decided to dance rather than walk her way down the catwalk. Her gold-hued attire featured an enormous leaf motif, bead-adorned handcuffs and belly chains.

Miss Honduras' Iroshka Lindaly Elvir wore a dazzling dress complete with thigh-high splits. The theatrical look was topped off with a turquoise feather head piece that had a gothic skull placed in the middle.

Miss Great Britain's Narissara Nena France, pictured left, appeared to channel Spice Girl Geri Halliwell in her Union Jack leotard, while Miss Ireland's Joanna Cooper, right, donned a daring body stocking.

Miss Turkey's Asli Melisa Uzun wears her country's national costume, which shows a picture of an ancient monument.

Miss Thailand's Aniporn Chalermburanawong, pictured left, and Miss Cayman Islands' Tonie Maria Chisholm, right, dazzled crowds.