So Blush!

Christina Aguilera wearing Atelier Versace gown

Rihanna wearing Marchesa gown

Sienna Miller wearing Stella McCartney

Eva Mendes wearing Atelier Versace

Scarlett Johansson wearing Stella McCartney

Eva Longoria Parker wearing Victoria Beckham

Pics from http://www.people.com/ and http://www.fashionrollcall.com/  and http://www.ultimate-rihanna.com/