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What a sparkler! 

Leighton Meester showed off her impressive wedding ring at a press conference for Broadway's "Of Mice and Men," on Thursday in New York.

The 27-year-old was joined by costars James Franco and Chris O'Dowd at the event, but her gorgeous new band was definitely the center of attention.

The "Gossip Girl" actress secretly tied the knot with "O.C." star Adam Brody last month in a private wedding ... just three months after they went public with their engagement.   

Leighton has yet to comment on her newly married status, but Adam confirmed the news to a photographer shortly after the cute couple said "I do."

The pair first met when they worked together on the film "The Oranges" back in 2011 and will be back together on the big screen soon enough in their new flick, "Life Partners."

We think the actress' wedding ring is really simple and beautiful -- what are your thoughts? Tell toofab in the comment section below, and check out even more celebrity wedding and engagement bling in the gallery above!

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