Hilton annoyed at Letterman interview

Socialite Paris Hilton was visibly upset during an appearance on David Letterman's US TV show last Friday night, when the host refused to stop asking her questions about her recent jail stint.

Hilton, who spent 23 days behind bars in June for violating her probation on a 2006 drink-driving charge, became increasingly uncomfortable and annoyed by Letterman's questions on 'The Late Show'.