Reality TV star Kelly Osbourne has been told she will have to curb her bad language after being invited to star in a royal theatre production in honour of British monarch Queen Elizabeth II's 80th birthday. The 21-year-old, who is the daughter of BLACK SABBATH singer Ozzy, will play the role of WENDY from Peter Pan in special play THE QUEEN'S HANDBAG, which will be performed at Queen Elizabeth's London residence Buckingham Palace. An insider says, "Kelly's calmed down, but she'll have to mind her Ps and Qs in front of the Royal Family."