Petra will date anybody. Sean Penn and Petra Nemcova showed up at the Oscars last night together. What is she doing? She seems so sweet and he is a well known meanie!

They were also seen together at Elton John's Oscar Party on Sunday night and took off together to Villa and left together at 3:10 a.m.

Petra previously dated James Blunt and Bruce Willis. Robin Wright Penn is already off and dating her ex, Jason Patrick, after she and Sean separated in December .

[image: WENN, source: SFgate.com]

Here we have a roundup of all those celebs we know and hate...err I mean love out on Halloween dressed in costume and ready to party!