Celebrity hairstylist Mark Townsend has been working with Mary-Kate and Ashley Olsen for more than 20 years. In a new episode ...

Mary-Kate and Ashley Olsen have solidified their status as style icons, but their signature wavy hairstyles are legendary in their own right. Their effortless yet sophisticated waves, however, are the ...

Mary-Kate and Ashley Olsen have a style all their own, no doubt about it. From designing one of the top luxury brands, The Row, to consistently topping street style charts, there is a very good ...

I 'Don't Compete' with Their 'Partnership' Mary-Kate and Ashley Olsen's Hairstylist Reveals Secret to the Sisters' Signature Waves and How Their Hair Differs Mary-Kate and Ashley Olsen's The Row ...

Related: The Unofficial Guide to Mary-Kate and Ashley Olsen's Hair Evolution Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer ...