What is the name of this episode of SpongeBob?

My sister was telling me about this episode of spongebob … I've seen it before, but forgot her name or I could see on the Internet. This episode was when Pearl was having a sleepover and Mr.Krabs wanted to see what they were doing what I was trying Sponge Bob to get in on some costumes and stuff. What is the name of this episode?

Everything you need to know: http://spongebob.wikia.com/wiki/The_Slumber_Party To Watch: http://www.tvduck.com/SpongeBob-SquarePants.html ^ You have to find "The Slumber Party" on the list.

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The Slumber Party/Grooming Gary $1.99 …

SpongeBob SquarePants: Season Six, Vol. 1 $13.71 Twenty-four episodes from the sixth season–including “Spongicus,” “Not Normal,” “Patty Caper,” “The Splinter,” and “Truth or Square”–are featured in a two-disc set. 5 1/3 hrs. total. Standard; Soundtrack: English Dolby Digital stereo; bonus shorts; more. **24 episodes on 2 discs. 5 1/3 hrs.**…