(Cover) - EN Showbiz - Selena Gomez says Leighton Meester and Katie Cassidy are "like sisters".

The three actresses have recently been filming new movie Monte Carlo together.

Selena has revealed they have all bonded and become like family.

"Leighton and Katie are definitely like sisters," she told the British edition of Bliss magazine. "They are so affectionate and sweet, and they're always there for you. Katie is a big fan of tough love and has very strong opinions when she gives you advice. Leighton is much more about following your heart. I love them both."

The 19-year-old starlet also has fun with co-star Cory Monteith. Cory is best known for his role as Finn in hit TV series Glee, but is making his first step into movies.

"We do this thing where I try and hit his arm as hard as I can," she laughed. "He works out, so his arms are quite big. I have yet to hurt him." (C) Cover Media