Pop star Shakira is pregnant with her second child, a close friend has revealed.

Fellow Colombian singer Carlos Vives said at an award ceremony in Miami, Florida: "Yes, she is pregnant and she's very happy."

Rumours that the 37-year-old was expecting first surfaced after she toned down her trademark bellydancing during her performance at the World Cup closing ceremony in Brazil two weeks ago.

Shakira already has a one-year-old son called Milan with her boyfriend, footballer Gerard Pique, 27, who plays for Barcelona.

They met four years ago when Pique appeared in the music video for Shakira's hit song Waka Waka (This Time for Africa).

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Last time we saw Shakira, she was kicking off the closing ceremony of the 2014 Brazil World Cup in all kinds of hot, sexy and raunchy ways.

The Colombian singer stripped down into a bright red stringy outfit, which we suppose was supposed to be a dress, and showed off her incredible figure as she took to the stage in front of the thunderous crowd.

Gerard Pique's missus performed her La La La (Brazil 2014) song alongside Brazilian percussionist and singer Carlinhos Brown, and had plenty of backing dancers in full tribal gear to make it possibly the most colourful performance we've ever seen.

Of course, what would a Shakira performance be without plenty of twerking, and sexy dance moves? Well, she threw them all in there.

It's hard to remember this is a football event.

But possibly the best part of all was when the star carried her adorable son Milan on stage - there's something he'll remember forever (we hope).

The star was almost as excited as us before the event, and tweeted: "Just TWO HOURS until the #WorldCup Closing Ceremony, feat Shak performing La La La (Brazil 2014)! ShakHQ."

And she followed it shortly after with a montage of her best snaps, and added: "That was so much fun! ¡Increíble! ShakHQ #WorldCup #ClosingCeremony."

She's a bit of a natural at all this, because four years ago she sang Waka Waka in South Africa, and four years before that she performed Hips Don't Lie in Germany.