Justin Bieber will take a paternity test and then he plans to sue the woman who has filed a paternity suit against him, a representative for the teen pop star said Monday.

Matthew Hiltzik said the 17-year-old singer will take a paternity test when he returns to the U.S. within the next two weeks. He also said Bieber's team plans to "vigorously pursue all available legal remedies to protect Justin."

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The paternity suit was filed last week in San Diego Superior Court by Mariah Yeater. She said she had just turned 19 when she and Bieber, then 16, had a brief sexual encounter after one of the singer's concerts last fall in a backstage bathroom at Los Angeles' Staples Center.

Bieber has said he's never met Yeater and has denied allegations that he fathered Yeater's 3-month-old child.
The singer was in London Monday where Bieber fever raged from the west end to the east Monday, as the pop star switched on the Christmas lights at the city's two biggest shopping malls.

Thousands of young and mostly female fans waited hours for Bieber to appear, first at the Westfield shopping center in west London, then hours later at the new Westfield Stratford City mall near the 2012 Olympic Park in the east. Bieber traveled the 12 miles between the malls by helicopter.

The star, who won two prizes at Sunday's MTV Europe Music Awards in Belfast, told fans that his favorite thing about London was "all the girls."

Bieber, dressed in a gray woolen hat and black leather jacket, said backstage Monday that despite the ups and downs, he was grateful for his fans.

"I take it with a grain of salt. It's been incredible, my fans are amazing and I wouldn't have it any other way," he said.

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