Actor Jennifer Garner stepped out for her first public appearance, a week after her intervention with her ex, Ben Affleck. Extra TV reports Garner was all smiles while promoting her new film ?Peppermint? at the Los Angeles premiere. A source tells US Weekly that at the after-party, Jennifer ?looked to be in a happy, relaxed mood. Jen made her rounds and was greeting, hugging and chatting with everybody in her area of the party.