Mariah Carey and Eva Longoria Looked Gorgeous at the Noble Gift Gala

Mariah Carey flaunted her sexy new figure in a red hot evening dress at the very posh Dorchester Hotel in London recently. The singer was the guest of honor at the 2011 Noble Gift Gala and was presented with an award by Hollywood actress Eva Longoria.

Mariah Carey says she has lost more than 70lbs in the last seven months since giving birth to twins Moroccan and Monroe.

The 42-year-old singer puts much of her weight loss down, first revealing her sexy new look on the Rosie O'Donnell Show.

Understandably, the All I Want For Christmas singer is clearly proud of her smokin' hot new look, pouring herself into a sexy red strappy dress that would give Jessica Rabbit herself a run for her money.

Eva Longoria, who also wore a stunning gown for the event, presented Mariah Carey with the 2011 Noble Gift Humanitarian Award for her efforts in helping disadvantaged children.

The Desperate Housewives actress looked amazing on the red carpet too, slipping on a full-length J Mendel gown, Brian Atwood heels and a box clutch bag by Salvatore Ferragamo.

The Noble Gift Gala is an event that pays 'tribute to those who help support and foster awareness for children and the empowerment of women around the world.'