She's Ukranian from a town called Kharkiv and she seems to be 16 (haven't found her "birthyear" yet)
Found it here:
From the town of Kharkiv in the Ukraine 16 year old Masha Tyelna (right), another Women Paris girl, has everyone talking. In particular it’s got to be her luminously huge eyes. They are gorgeous, cartoonish and you’ve seen them (and her) at Dries van Noten, Givenchy and Yves Saint Laurent. 5′11″ Masha will be busy today, the final day of Paris, as she’s confirmed for both Nina Ricci and Miu Miu. Up next is a massive 12 page solo shoot for Dazed and Confused with Ali Madhavi.
The big scans are from supermodels.nl
The small pics are from her agnecy's website
I can't wait to see the spread of Dazed&Confused!
Thank you so much for the pictures and info Carmelita