Jen and Vince may have split in December but they clearly have remained good friends. In fact, Vince was present at Jen's 38th birthday party this weekend which was held at Courteney Cox's Beverly Hills home. Vince was apparently there for 2 hours with other friends like Sandra Oh and David Spade. In these pics he is headed to work but not before a little stretch and a smoke. Let's hope he dressed up a little more for Jen this weekend.