Jennifer Aniston  and Courteney Cox  were together last night in LA to celebrate Mandy Ingber's new book, Yogalosophy: 28 Days to the Ultimate Mind-Body Makeover. Also out for the bash at Soho House were Ricki Lake and a Monique Lhuillier-clad Kate Beckinsale . In addition to Jen and Courteney's long-term friendship, Jennifer and Mandy also go way back — they've been practicing yoga together for years, and many credit Mandy with keeping Jennifer in such amazing shape.
Two weeks ago, Jennifer wore another short black outfit to celebrate one of her own debuts. Jennifer Aniston wore Dior  to the premiere of her latest project for Lifetime called Call Me Crazy: A Five Film. To promote Call Me Crazy, Jennifer visited The Ellen DeGeneres Show as well, and there she shot down any rumors that she and Courteney will reunite professionally for a Friends reunion.
During her chat with Ellen, Jennifer also spoke about her fun-loving fiancé Justin and his love of scaring her by hiding behind drapes, or practicing what he calls "trickery." They're, of course, working on the joint project of organizing a wedding . The latest on their big day comes from Us Weekly, which reports today that Jen and Justin are delaying their wedding  until later in the year for a variety of reasons.