Dianna Agron: It's Really Sad Looking at Lindsay Lohan

Dianna Agron's star is rising -- the "Glee" actress graces the cover of the September issue of Cosmopolitan, and spoke about her increasing fame and how she strives to keep her private life under wraps.

Agron told the magazine, "It's really sad looking at people like Lindsay Lohan. She's an amazing actress, but you see what happens when people know too much about your personal life. They start not being able to look at you the same way professionally. I don't want that to happen to me."

The 25-year-old, who has been making the rounds promoting the "Glee 3D Concert Movie," has made headline before concerning her personal life.

Her split from actor Alex Pettyfer was well documented. The couple went from reportedly being engaged to Agron packing up her bags and leaving the home the couple shared together back in February.

While Agron may want to keep her personal life private, the actress isn't tight-lipped about everything. Last week she appeared on "The Late Show with David Letterman" and confessed she's broken her nose twice and since had it fixed.