Probably two of the most legendary icons, Paris Hilton and John Lennon, Jr., in our world today totally snubbed some musicians in Pacific Restaurant in Monaco. The musicians went to Hilton and Lennon's table during their dinner and played several songs by request.

But after the songs, Hilton and Lennon just walked out without even tipping! The Gypsy Queens were mortified because they had kept playing for them almost all night. It's considered very rude not to tip in Monaco!
Source: nypost