This made us do a double take!

Kathy Griffin dolled herself up as Kate Gosselin at the Hollywood Roosevelt hotel pool for a Jimmy Kimmel Live skit ... and was a dead ringer for the mom of eight!

"She was walking around the hotel and people actually thought she was Kate," an observer told People.

And Star Trek alum George Takei played Ed Hardy-loving Jon! LOL.

Check out celebs with Kate's infamous 'do below!