Katy Perry sizzles in a fiery flamenco dress at the amfAR Gala, standing out alongside beau Orlando Bloom. Power couple goals!

Katy Perry turned up the heat as she arrived at the amfAR Gala in a striking dress.

The Firework singer wowed at the glitzy event in a flamenco-style floor-length gown with frills.

Katy made quite the impression, posing with her hands on her hips and her dark hair slicked back.

She pouted for the cameras and a splash of red lipstick added some extra Sєx appeal.

Katy Perry at the amfAR's 23rd Cinema Against AIDS Gala in Cannes, France — Katy Perry blows a kiss

Katy, 31, no doubt had one special admirer at the event – her boyfriend, Orlando Bloom.

The pair arrived separately as they try and keep a lid on their blossoming romance, despite being seen on a number of romantic dates while in Cannes.

Brit actor Orlando looked very dapper in a black tuxedo and bow tie.

Orlando Bloom at the amfAR's 23rd Cinema Against AIDS Gala in Cannes, France — Very smart

Katy is set to perform at the event, held at the five star H๏τel du Cap-Eden-Roc.

Models including Lara Stone and Barbara Palvin are expected to rock the runway for a charity fashion show.

Alessandra Ambrosio arrived with a bang at the gala, showing off some serious skin in a sheer black dress with both a plunging neckline and a very daring split.

Alessandra Ambrosio at the amfAR's 23rd Cinema Against AIDS Gala in Cannes, France — Now THAT’S a thigh-high split

Ahead of the fundraiser Heidi Klum wrote on Twitter: “Looking forward to joining @amfAR tonight! Proud to be supporting the fight to end #AIDS #amfARCannes.”