At the New York Guggenheim Museum launch of her perfume, she flashed her bum, went to sleep inside a giant perfume bottle and had a tattoo while her fans looked on.
For Macy's she turned up in a carriage shaped like a giant perfume bottle, looking like a satyr crossed with an alien.
So we hope Lady Gaga has some similarly weird stuff up her sleeve for her Harrods perfume launch this weekend.
Understated: Lady Gaga arrives at Macy's for her perfume launch
The scent - named The Fame - apparently smells like "tears of belladonna, crushed heart of tiger orchidea with a black veil of incense, pulverised apricot, and the combinative essences of saffron and honey drops."
So far so gothic, so kooky, so avant garde and so Gaga. But it's got us thinking - is a perfume launch not usually the kiss of death for a celebrity's kudos?
Is it not all a bit tawdry and airport shopping lounge? Do you really want to smell like Britney Spears or Justin Bieber? Can you keep a straight face about the fact Sean Coombs named one of his scents "Unforgiveable"? Do you even know who Hillary Duff is?
Here are ten famous faces we think should have skipped the perfume carousel.