Jennifer Aniston and Justin Theroux have been partying in Mexico with George Clooney. The couple were among a string of famous faces, including Jimmy Kimmel, Howard Stern, Michael Phelps and Cindy Crawford who attended an annual brunch at the El Dorado Beach Club in Los Cabos, for the 'Up in the Air' actor's alcohol brand Casa-migos Tequila on Sunday, where they got to enjoy a special tasting of the drink.