The former Girls Aloud star, who is expecting her first child with her long-term boyfriend Justin Scott, was seen arriving at a studio in London.
Kimberley was on the way to a special recording of the England 2014 FIFA World Cup for Sport Relief, and was joined by other celebrities including Mel C, Emma Bunton and Katy B.
The pregnant pop singer, 32, kept her tiny bump hidden under black high-waisted trousers, which she paired with a plain black top. Kimberley wrapped up from the cold with a sheepskin-lined leather jacket and completed her chic look with black and gold stilettos.
As she stopped to pose for photographers outside the studio, the blonde beauty flashed a smile at the cameras. The stylish Kimberley added a dash of colour to her outfit with chunky gold necklaces and thick banded rings. Opting for a slick of red lipstick and perfectly manicured pink nails, Kimberley kept her look clean and fresh.
Just last week the Bradford-born songstress announced her baby news on Twitter.
"Justin and I are so happy to let you all know we are having a baby!!!," wrote Kimberley. "Couldn't wait to share our lovely news with you all ❤."
Among the first to congratulate the happy couple was Cheryl Cole, who wrote, "FINALLY, I thought at one point I was going to burst ❤️❤️❤️❤️❤️❤️❤️❤️."
Best friends Kimberley Walsh and Cheryl Cole
The Fight For This Love singer also posted a touching message on Instagram to the parents-to-be. "Finally! I am able to share some of the BEST NEWS EVER!!! Kimberley and Justin are expecting their first baby together. It has been both one of the most exciting and yet hardest things to keep in!!" she wrote.
"I have watched them grow from strength to strength over the past 10 years! And this is the best bit of it all!!!!!! Aaaaaarrrrgggghhhhhh!! Love you both to absolute pieces CONGRATULATIONS !!" she added.
Kimberley and Justin have been dating for more than ten years, and live together in North London.