8. Britney Spears
Aw, don't do this to us Brit Brit.
With an estimated worth of $200 million, you'd think she'd learn how to tip.
Exhibit A: Britney was said to have tipped a valet attendant, by throwing change at his feet and saying, “There’s your tip.”
Exhibit B: Spears once left a $26 tip on a $500 bill.
Oops, she did it again.