Justin Bieber Lights Up London At Christmas Tree Lighting (PHOTOS)

London’s Westfield Shopping Centre was ambushed on Monday as thousands of screaming Beliebers made their way into the two tree lightings and a performance by the teen heartthrob himself, Justin Bieber

Justin was joined onstage by UK boy band The Wanted as they guys sang to the thousands of screaming fans, including former Spice Girl, Geri Halliwell!

The 17 year-old pop icon urged to his London fans that he would be bringing his swag to both shows, tweeting: 

LONDON! See everyone at BOTH Westfield Mall Tree lightings tonight!!!! #europeswag

The Biebs, 17, was spotted earlier in the day keeping close to gal pal, Selena Gomez, 19, as the two enjoyed a private tour of Chelsea Football Club’s facilities.

Just one night earlier, Selena hosted the MTV EMAs and Justin tweeted his support for his leading lady:

“Great job tonight @selenagomez tonight at the EMA’s. proud of u.”

Justin is also in the middle of a paternity lawsuit, TMZ reports Justin will be taking a DNA test to prove that he is not the father of Mariah Yeater’s baby. That testing is scheduled for two weeks from now, when he returns back to the states.