TomKat's big mistake!

When Paramount Pictures CEO Brad Grey wed Cassandra Husentruyt in Beverly Hills April 16, Tom Cruise and Katie Holmes joined the likes of Jennifer Lopez, Marc Anhony, Brad Pitt, Mark Wahlberg and Jack Nicholson.

Except Suri's famous mom and dad perplexed the party's staff upon their arrival with an unexpected blunder.

Find out exactly what happened in this week's super-duper hilarious Hot Stuff video, hosted by Senior Editor Ian Drew and extra-special, fabulous guests, RuPaul's Drag Race stars Manila Luzon and Shangela.

Also in the round-up: An LOL discussion of Robert Pattinson, LeAnn Rimes, Chord Overstreet and more.

The season finale of RuPaul's Drag Race premieres Monday at 10/9c on Logo.

Watch the funniest Hot Stuff video ever -- above!