Lady Gaga tipped restaurant staff with a signed handkerchief.
The 'Poker Face' singer left the lacy square of fabric - complete with black lipstick marks and her signature - on her table at London eatery Hakkasan after dinner with fellow pop star Mika on Monday night (20.04.09).
A diner said: "She left them a lace hankie with her black lipstick print on it and her signature. Mika also left a hefty chunk of cash."
Staff were thrilled with the unusual tip but reportedly less impressed with Gaga's diva behaviour.
The singer - who was wearing pink thigh-high lace-up boots, underpants, a tuxedo jacket and an oversized hat - demanded to be re-seated because another diner was "ogling" her.
She later asked staff to help her look for her "lost" Chanel handbag. After a frenzied search, another diner found the bag under a discarded napkin.
The 23-year-old star is known for her love of expensive luxury items, and claims to spend all her money on fashion.
She said: "I plough all my money back into my shows and props. You could say I'm the Carrie Bradshaw of couture."