Former Monsoon online boss Kristine Kirby has left Zulily, the private sales site of which she is UK managing director.

Kirby joined the business in November 2011 ahead of its UK launch in April this year. It is not yet clear why she has left the business.

Kirby has previously held positions at lifetstyle retailer Fat Face and women’s young fashion brand Lipsy. Prior to joining Zulily, Kirby was ecommerce and multichannel director at Monsoon Accessorize, leaving in June 2011 after a year at the retailer.

Zulily specialises in baby and kidswear clothing and toys, and has five-to-10 daily Sales events, which last up to 72 hours.

Members can take advantage of discounts of up to 90% on branded product.