Skincare brand Biotherm has named Leighton Meester as its new global spokesperson. The 27-year-old actress first rose to prominence in \'Gossip Girl\' and can soon be seen starring in  \'The Judge\' opposite Robert Downey Jr and Robert Duvall, and  \'Life Partners\' opposite Adam Brody. Leighton will debut as Biotherm’s new global ambassadress in the next face care campaigns in early 2014, including the brand’s Aquasource.