Mary-Kate Olsen can't leave the house if she isn't happy with what she's wearing.
The 25-year-old blonde - who runs three successful clothing labels with twin sister Ashley - says it's very important for her to be comfortable in the clothes she's got on otherwise she finds it a struggle to go out.
Doctors have banned Demi Moore from weighing herself while in rehab.
The 49-year-old actress is undergoing treatment for ''substance abuse and anorexia'' at Cirque Lodge in Utah - which has previously treated stars including Lindsay Lohan, Mary-Kate Olsen and Eva Mendes - and medics at the centre don't want Demi focusing on her size while she recovers.
Mary-Kate and Ashley Olsen didn't want anyone to know they were the brains behind The Row.
The 25-year-old twins - who have also become well-respected within the fashion industry thanks to their lines Elizabeth and James and Olsenboye - think it was "far more fun" not to lend their faces to the collection, and initially even considered hiring someone to front the brand.