This popular name in various Slavic countries and in Italy holds considerable Continental appeal. It is the full name of Ukranian-born actress Mila Kunis, most noted for her award-winning role in the film Black Swan. Another actress bearing the name is Milena Govitch, of Law & Order.
Milena, which entered the US Top 1000 in 2012 (and is now Number 760 in 2015) is one of the top names in Poland. Short form Mila has been on the US list since 2006.