July 14, 2010 - New York, New York, U.S. - BLAKE LIVELY,LEIGHTON MEESTER.on the set of ''Gossip Girl'' on 106st and.Riverside ave 7-14-10. 2010..K65608JBB. © Red Carpet Pictures
Leighton Meester and Blake Lively on the set of Gossip Girl

Alright, so maybe January Jones is a bit older than the other three. Still, one has to ask, why are high fashion houses suddenly obsessed with Hollywood ‘It’ girls? And who is behind it?

Leighton Meester is the most recent high-fashion-gone-Hollywood announcement. Meester will be the face of Missoni Spring 2011 ad campaign. The announcement comes after last week we learned that her Gossip Girl co-star, Blake Lively, will be the face of Chanel Spring 2011 handbags ad campaign and Rumer Willis, Bruce Willis’ daughter, will head the forthcoming Badgley Mischka campaign. The images of January Jones for Versace Spring 2011 handbags ad campaign are already out.

Perhaps the choice of Leighton Meester and Blake Lively for Chanel and Missoni respectively can be explained by the girls’ recent trip to Paris during Haute Couture Fashion Week and their heavy presence in the most coveted runway shows front rows (and a gentle nudge by Anna Wintour). And as for January Jones and Rumer Willis… Jones has been wearing Versace for years, so this was only a matter of time and Willis’ choice for Badgley Mischka will forever remain a mystery.

LOS ANGELES, CA - AUGUST 29: Actress January Jones arrives at the 62nd Annual Primetime Emmy Awards held at the Nokia Theatre L.A. Live on August 29, 2010 in Los Angeles, California. (Photo by Frazer Harrison/Getty Images)
January Jones wearing Versace Atelier to 2010 Emmy Awards

Sept. 12, 2010 - New York, New York, U.S. - Dee Hilfiger, designer Tommy Hilfiger and Rumer Willis.Mercedes-Benz Fashion Week, Spring 2011 Tommy Hilfiger Fashion Show - Backstage. Lincoln Center, NYC 09-12-2010.Photos by - - Photos Inc. 2010.I15319BT. © Red Carpet Pictures
Tommy Hilfiger and Rumer Willis at Tommy Hilfiger Spring 2011 runway show

PARIS - JULY 06: Blake Lively attends the Chanel show as part of the Paris Haute Couture Fashion Week Fall/Winter 2011 at Grand Palais on July 6, 2010 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)
Blake Lively in Chanel Haute Couture Fall 2010 front row

PARIS - JULY 06: Leighton Meester and Clemence Poesy attend the Chanel show as part of the Paris Haute Couture Fashion Week Fall/Winter 2011 at Grand Palais on July 6, 2010 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)
Leighton Meester in Chanel Haute Couture Fall 2010 front row