Arnold Schwarzenegger's son Joseph Baena shows off abs as he undertakes grueling gym workout in LA

Emma Roberts is gorgeous in a black dress as she chats on the phone and cradles her baby bump in LA

Demi Lovato shows off a hint of her midriff in an Instagram selfie snapped in front of a neon sign

Cameron Diaz bundles up against the autumn chill in a cozy black sweater out in LA