She's currently riding high at the top of the movie charts with huge new release New Moon.
But Kristen Stewart seems to be endorsing a different kind of high with her bikini.
In the pictures, taken in July 2008, the 19-year-old actress is seen aboard a yacht in San Jose, Costa Rica with her brother Cameron, wearing a white bikini with marijuana leaves printed across the front.
The Twilight actress is pictured in a bikini adorned with marijuana leaves while she relaxes with a male friend in Costa Rica
U.S. website TMZ obtained photographs of the actress sat outside her house in LA with a male friend, taking puffs from a water pipe commonly associated with smoking marijuana.
The actress is rumoured to be dating her co-star, British actor Robert Pattinson.
Just last week they were pictured holding hands as they left the Paris leg of their global press tour.
The marijuana leaves are seen in more detail - Kristen made headlines last year when she pictured smoking a substance from a water pipe commonly associated with the drug
The duo started their night at the ultra exclusive Soho House, where they “had a good time,” a source told the website.
It is said they then went to a club called Avenue, where they were spotted 'making out while their bodyguards tried to block prying eyes'.
Kristen and Robert get into character in the new film as they share an intimate moment, the actors are said to be dating in real life
The movie has already taken more than any installment from the Harry Potter, Lord of the Rings or James Bond franchises ever did.