Mary-Kate and Ashley Olsen have created a luxury handbag collection under their fashion label The Row.

The 25-year-old twins will launch a nine-bag line including a day tote, backpack, doctor bag and shoulder bag made from python and alligator in Barneys department store, New York in August. The siblings don't rely on a specific era for inspiration with Ashley revealing she is influenced by different times while Mary-Kate struggles with ever repeating trends.

"There are important style contributions from almost every era. Drawing on the right references at the right time is the key," Ashley said.

Mary-Kate added, "My problem is not with the trends themselves but the fact that trends are constantly repeating themselves."

Averyl Oates, buying director for Harvey Nichols, who stock The Row, recently claimed the success of the label is due to its "timeless generational appeal."

"The label carries timeless generational appeal while still remaining directional. Mary-Kate and Ashley recently achieved their ambition of dressing Michelle Obama. Lauren Hutton has also worked with the brand and I think the ageless appeal lies with the fact that the collection has a crystal-clear DNA," Nichols explained.