Pixie Lott launched her fourth collection with fashion brand Lipsy in London last night.

The 20-year-old popstar wore a strapless black dress and chunky ankle boots to the event, which was also attended by TV presenters Vanessa Feltz and Lizzie Cundy, actress Sarah Jayne Dunn and pregnant Wonderland singer Jodi Albert.

Lott said of her latest collaboration with Lipsy: "I love designing my own clothing line with Lipsy. I am so excited that this is my fourth clothing range. The new range is the best one yet."

Sarah Jayne Dunne, Jodi Albert and Ali Bastion

Pixie Lott wearing a leg-baring mini dress

Lizzie Cundy also went for a short, fitted dress for the event

Vanessa Feltz attended Pixie Lott's launch in London