Withit's US agent has secured a deal with Texas-based firm Pacific Legwear.
"We are very happy and pleased to be working with the great people at Withit," said Lisa Sizemore, president of Pacific Legwear. "We were impressed and excited with Withit's characters and the ability to translate them into fashionable legwear.
"When mixed with the characters, we will deliver fashion forward and trend-right products that are sure to add even more excitement to the Withit brand."
Richard Woolf, international licensing director at Withit, added: "We are excited to be working with such a high calibre company and we are looking forward to building our business further in the US, developing the relationship further."