The blonde beauty met Pettyfer on the set of their upcoming sci-fi movie I Am Number Four, and she went public with their love in August (10) when she introduced him to her TV co-stars.
Now the actress has sent gossips into a spin after she was pictured trying to hide a ring on her wedding finger during a trip to London this week (begs22Nov10).
Agron was leaving the Groucho club in the U.K. capital on Thursday night (25Nov10) when she was seen sporting a sparkler on the third finger of her left hand.
As a photographer zoomed in, the coy star giggled and held her scarf over her face before turning her arm away to hide the ring from view.
An onlooker tells WENN, "She seemed to find it amusing but was clearly keen for the photographer not to get too many pictures of the ring she was wearing."