Mary-Kate and Ashley Olsen design next season's staple.

Mary-Kate and Ashley Olsen have designed a $16,000 fur bag.

The designer twins - who have three successful clothing lines, The Row, Elizabeth and James and Olsenboye - recently revealed their pre-fall accessories collection for The Row and the highlight is the multi patchwork fur back pack.

The pricey tote is also offered in black shiny calf skin, slate shiny alligator and black alligator and is already proving popular, with celebrity stylist Rachel Zoe a big fan.

She wrote in her newsletter: ''Pretty in patchwork, The Row's posh pack combines comfort and class. The fuzzy texture on this nifty knapsack is also a fashion favorite. Perfect for pre-fall, it's never too soon to start thinking ahead for your next season's staple!''

This is not the first time, Mary-Kate and Ashley have created an expensive bag.

Last year, the former child stars launched a $39,000 alligator backpack, which sold out immediately.

Ashley said: ''It was the first thing that sold off the shelf. During our last economic crisis in the U.S., the only thing that went up was Hermes.''

© Bang Showbiz