Christina Aguilera was arrested yesterday for being drunk in public.
Her boyfriend, Matthew Rutler, was arrested on suspicion of driving under the influence.
The singer, 30, spent around five hours in custody after police arrested the couple in West Hollywood.
According to a Los Angeles Sheriff spokesperson, Christina was taken in by police because she “was not able to look after herself.”
The mother-of-one was a passenger in a car driven by Matthew when police pulled the pair over for driving dangerously.
Speaking at a press conference, police spokesperson Steve Whitmore explained: “[Officers] witnessed a person driving erratically.
“At 2.45am this morning a gentleman was stopped for allegedly driving under the influence. He was subsequently arrested and his passenger, Ms Aguilera, she was arrested.
“It was kind of a unique situation with this law as she was not capable of taking care of herself. She was incapacitated.
“When she got out of the car she couldn’t stand. We had to help her stand. She didn’t know where she was and she didn’t know her own address. We took her in to custody for her own protection.
“She was cooperative and she was not belligerent in any way whatsoever. She was just intoxicated.”
Police explained they are not charging Christina with any crime and the arrest was purely for her own safety.
Musician and production assistant Matthew was released on a $30,000 bail.
It is the latest in a series of humiliating mishaps for the singer.
Earlier this year she was left red-faced after botching the lyrics to the American national anthem while performing at the Super Bowl.
She then tripped and fell while performing an Aretha Franklin tribute at the Grammy Awards.
Christina has been dating Matthew since November after splitting with her husband, Jordan Bratman, with whom she has a three-year-old son.