(Cover) - EN Star Style - Kelly Osbourne admits she and Lourdes Leon often get told off for "giggling" while working on the Material Girl fashion line.

Television personality Kelly, 26, is the face of the 80s-inspired clothing collection, which is designed by Lourdes, 15, and her pop star mom Madonna, 52.

Kelly has been modelling the Fall/Winter 11 line, and admits she and Lourdes got in trouble on set as they laugh so much.

"We just have a really good time. Giggle, and girl talk - and we get told off because we're not doing what we're supposed to be doing," she laughed in an interview with Entertainment Tonight.

In the latest campaign Kelly can be seen sporting trendy items such as floral dresses and skinny jeans. Lourdes, 15, is thrilled with the range, explaining how quickly style can change. She was also quick to sing Kelly's praises.

"Fashion, like a year ago, it changes so fast, it's not the same as it is now, and my style has changed, so I think [the collection has] just developed," she beamed.

"It's been so good. I mean the first time we had the photo shoot it was great, I always thought [Kelly] was great and everything, but now it's even better because we know each other (C) Cover Media