Ashley and Mary-Kate Olsen, the tweenage marketing phenomena, have appointed a veteran of apparel maker Levi Strauss & Co and retailer Gap Inc as the new CEO of their Dualstar Entertainment Group.

Diane Reichenberger will oversee the design, marketing and sale of products for the mary-kateandashley line of fashion, health and beauty, home furnishings, entertainment and lifestyle items targeted at young girls the company said in a statement.

She replaces Robert Thorne who sold his minority stake in Dualstar to the twins in January.