British actress Emma Thompson has mixed emotions whenever she visits pal Ellen Degeneres` chat show - because she once appeared on the programme without her panties.

Thompson thought tight-fitting Zac Posen dress would show up any pantylines so she went on without them, reports contactmusic.com. She later found out that she had to take part in a pole-dancing skit.

She came back to the show recently and said: "I was quite scared that it was going to be a sort of `Basic Instinct` only without the really good lighting... (It was) a tiny bit of a worry."