Pictures: Mariah Carey Shows Off Post-Baby Body in Sizzling Red Dress

Mariah Carey attends the Noble Gift Gala at The Dorchester on December 10, 2011 in London, England. (Getty Images)more pics Mariah Carey (Getty Images) Mariah Carey welcomed twins just over six months ago and she showed off her amazing post-baby body last night at Noble Gift Gala in London. The new mom posed in a stunning red dress that showed off her sexy curves.

The singer, who's lost over 70 pounds since delivering her babies, looked happy and healthy at the charity event. Eva Longoria also made an appearance, and Carey thanked her for her support on Twitter. " You're a wonderful humanitarian and a beautiful person. Thank you so much for your kind words at the charity event last night," she wrote.

Carey seems to be enjoying her time in London, and tweeted all about staying in the fancy Dorchester Hotel. "Here with my friend Azim at London's most fabulous hotel - The Dorchester, 'Ros' is here, very festive!" she wrote.

See more Mariah Carey pics here: