Girls Aloud‘s Nicola, 38, wore a sleeveless, figure-hugging floor-length dress with a multi-coloured top half.
The hitmaker added height to her frame with a pair of black boots and let her locks fall loose down her shoulders for the evening.
Former Dragon’s Den star Kelly, 64, wore a dress with detached grey sleeves and several necklaces and carried a brown bag.
Radio presenter Vanessa, 61, wore a nude-coloured dress with hundreds of blue gems and a pair of silver high heels.
The three women joined other celebrities to raise money to drive Children With Cancer UK’s research into the disease.
One of the charity’s ambassadors, Paula Radcliffe MBE, 49, attended with her daughter, Isla.
Their long, sleeveless dresses were very similar in style but Paula’s was all-black whereas Isla’s and a gold top part.
Loose Women’s Andrea McLean, 54, arrived wearing a suit-inspired red dress and her husband, businessman Nick Feeney, wore a black suit.
Made In Chelsea’s Ollie Locke, 36, and his husband of three years Gareth Locke looked very dapper in black tuxedos.
Jenni Falconer, 47, host of Smooth Radio Breakfast, attended the Gala in a dress with a sheer top with her husband James Midgley, who acted in Ackley Bridge.
Television presenter Angellica Bell, 47, who was axed from the Martin Lewis show last month, stunned in a flowy dress covered in multicoloured sequins.
Juliet Sear, a baking expert, looked fantastic in a glittering black mini dress with long sleeves ending in feathery tufts.
Journalist and mental health advocate Matt Johnson looked very suave in a black tuxedo with shiny black lapels and a shiny black bowtie.
Children With Cancer UK was founded in 1998, and its gala occurs annually.
The charity’s CEO, Jo Elvin, spoke on its importance, saying: ‘As well as being a fantastic evening of entertainment, our annual Gala is an important opportunity for us to shine a light on the impact that research is making in the fight against childhood cancers, and a reminder that ongoing fundraising is critical to ensure that one day, every child will survive a cancer diagnosis.
‘Despite survival rates improving, there are still around 4,200 new cancer cases in children and young people in the UK every year.
‘Every pound raised from this year’s Gala will make an immediate impact for children and their families by helping to fund life-saving scientific research into childhood cancers and provide crucial ongoing support for young cancer patients and their loved ones.’