Pamela Anderson celebrated her 40th birthday with a pink-themed party in Las Vegas on Saturday.

The former Baywatch babe toasted her fifth decade at the Planet Hollywood Resort following her performance as assistant to illusionist Hans Klok.

Klok, who is rumoured to be dating Anderson,- presented the actress with a rare edition of a Houdini book.

Anderson invited ex-husband Tommy Lee, photographer/filmmaker pal David LaChapelle and her bodyguard to join in the all-night festivities.

One partygoer said, “She was having a ball. You would never guess she’s 40.”