VIDEO: Sneak Peek - Season Finale of Showtime's SHAMELESS

On the upcoming season finale of Showtime's SHAMELESS titled "Survival of the Fittest", Lip is graduating from high school, so Fiona and the family prepare a surprise party for him. Frank wins a bet and uses the winnings to take Lip out for lobster and some quality father/son time. The series airs Sundays at 9:00 pm on Showtime. Get a sneak peek below!

Oscar®-nominated William H. Macy and Emmy Rossum star in this fiercely engaging and fearlessly twisted new series. Chicagoan Frank Gallagher is the proud single dad of six smart, industrious, independent kids, who without him would be... perhaps better off.

When Frank's not at the bar spending what little money they have, he's passed out on the floor. But the kids have found ways to grow up in spite of him. They may not be like any family you know, but they make no apologies for being exactly who they are.