Mariah Carey arrived in central London Tuesday night and literally stopped traffic.
Oxford Street, the busiest shopping strip in the capital, came to a virtual standstill as the singer promoted her new album E=MC2.
Police barriers stopped vehicles going past Selfridges as hundreds of fans waited to catch a glimpse of the star.
She said: "It's really cool that they would do this and it's great to see so many people show up."
After the grand entrance fit for a Prime Minister or President, the American star - who arrived two hours late - was ushered inside by store staff and members of her entourage.
Two floors of the biggest department store in the UK were shut down for her arrival alone and Mariah looked in great shape in a tight mini skirt, black low cut top and 4inch black heels.
Of the new songs, she said: "I just feel like getting a lot of these out there to the world. Some of them I wrote to heal myself, some are just party records but they all are very personal to me."
The new CD could put 'Mimi' into the record books. As far as all time US Number One singles go, Mariah is joint second with Elvis Presley on 17. Only The Beatles have scored more with 20 chart toppers.
The singer said she was hopeful of breaking the record in her own modest way.
She added: 'I'm grateful with what I've already accomplished it's not about breaking records to me. I definitely don't want to put myself in any category with historical people who've helped changed the world."
Mariah's career spans over two decades. And at 38 she still looks the same as when she first started out.
"I'm eternally 12 because it's from within," she joked. "It's all about where you are spiritually."
X Factor winner Leona Lewis has been dubbed the new Mariah but the star was quick to shoot down any similarities.
"They've been comparing people to me for the longer than I can remember, I'm just like, 'Whatever'," she shrugged.
"If they're the new me can they come and do my interviews for me or get in the studio and write one of my songs? Seriously though, I love everybody, it's not a competition for me."
to watch video clips of Mariah in London.