‘It’s Always Sunny’ Actress Mariann Gavelo — My Ass Is UNREAL

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Mariann Gavelo has a huge ass. We”re talking Kim Kardashian style HUUUUUUUGEEE … and it was all out on display at a party in Hollywood last night.

Gavelo — who appeared on “It”s Always Sunny in Philadelphia” (the “Thunder Gun” episode) and in Will Ferrell”s “Casa de Mi Padre” — hit up the Maxim Hot 100 party with her badonk in tow.

Besides her dumper, Gavelo”s a pretty petite chick, so we gotta ass — is there ANY CHANCE that butt is real