Cameron Diaz and Jason Segel on the set of their new film 'Sex Tape'
Cousart/JFXimages/WENN.com

 Natural and pretty as always, Cameron Diaz films new movie ‘Basic Math’ formerly ‘Sex Tape’ in Los Angeles with newly thin co-star Jason Segel.

Together again after co-starring in naughty ‘Bad Teacher‘, they play a married couple who’s raunchy home video goes missing.

Cameron Diaz and Jason Segel on the set of their new film 'Sex Tape'
Cousart/JFXimages/WENN.com