Lindsay Lohan and Eddie Murphy have both been crowned the worst actors of 2007 at the Golden Raspberry Awards, or Razzies, which spoof the Oscars.
Both Norbit and I Know Who Killed Me received poor reviews in the US
They each won three gold spray-painted trophies worth $4.89 (£2.48).
Murphy won three of the four worst acting categories for his comedy Norbit, which was mauled by critics.
Lohan won two worst actress Razzies for I Know Who Killed Me. The film broke records by winning eight of its nine nominations, including worst film.
This shattered a record for seven Razzie wins, previously held by Showgirls and Battlefield Earth.
Lohan also won worst screen couple for a scene in which she appears opposite herself.
In I Know Who Killed Me, she plays a small-town girl abducted by a psychopath, and an alter-ego stripper who is missing body parts. It was a major box office flop, with takings of $9m (£4.5m) worldwide.
The actress was in and out of rehabilitation programmes last year. In November, she served 84 minutes in jail for drunken driving and cocaine possession charges.
Norbit sees Murphy play three characters in the film about a man who meets his ideal woman while engaged to a battleaxe. He plays Norbit, plus a Chinese man and Norbit's screaming overweight wife.
Despite a poor reception from critics, it had box office success, with takings of $158m (£94m) worldwide.
His Razzie success is quite a turnaround in his fortunes, as he was up for an Oscar last year for Dreamgirls.
Some critics said Norbit, which was released just weeks before last year's Oscars, may have cost him crucial Academy Award votes for his Dreamgirls role.
His personal life also made headlines last year when he acknowledged fathering a child with Spice Girls singer Melanie Brown.
In January, Murphy and his new wife, Tracey Edmonds, split just two weeks after a "symbolic marriage ceremony".
The other worst-picture nominees were Bratz, a live-action film based on the children's' dolls; Daddy Day Camp, with Cuba Gooding Jr starring in the sequel to Murphy's Daddy Day Care; and I Now Pronounce You Chuck & Larry, Adam Sandler and Kevin James' comedy about fire-fighters posing as a gay couple.
Here is the list of Razzie winners in full:
Worst film: I Know Who Killed Me
Worst actor: Murphy in Norbit
Worst actress (tie): Lohan as twin sisters Aubrey and Dakota in I Know Who Killed Me
Worst supporting actress: Murphy in Norbit
Worst supporting actor: Murphy in Norbit
Worst screen couple: Lohan & Lohan in I Know Who Killed Me
Worst remake or rip-off: I Know Who Killed Me, based on several films
Worst prequel or sequel: Daddy Day Camp
Worst director: Chris Siverston for I Know Who Killed Me
Worst screenplay: Jeffrey Hammond for I Know Who Killed Me
Worst excuse for a horror movie (New Category): I Know Who Killed Me