Fluid World, the U.K. licensing agent for Sanrio, has extended its agreement with Fashion Lab for Hello Kitty children's leisurewear, nightwear, swimwear and underwear in the U.K., France and Benelux.

Fashion Lab trialed a small number of lines, which became top sellers at Next. The licensee already has a license for Hello Kitty ladies' and teen clothing.

"We are delighted to continue and develop our strategic relationship with both Fluid World and the Sanrio family," says Jonathan Sieff, chairman of Fashion Lab. "The Hello Kitty brand continues to offer unique and exciting opportunities for both our creative team and our retail partners which we look forward to developing over the coming months."

Libby Grant, brand director at Fluid World, adds: "We have worked with Fashion Lab for over a year on adult and teen clothing. They have fantastic design capabilities, quick turnaround and a good understanding of the brand, which means they can both satisfy the needs of our retailers, as well as react to the fast-changing fashion industry. We look forward to developing our relationship with Fashion Lab and launching some fantastic new products."