Jennifer Aniston, Justin Theroux Engaged!

Access Hollywood
Jennifer Aniston and Justin Theroux smile at American Cinematheque's 2011 Award Show Honoring Robert Downey Jr. at The Beverly Hilton Hotel in Beverly Hills on October 14, 2011 -- WireImage

Jennifer Aniston is headed down the aisle!

Jennifer and boyfriend Justin Theroux are engaged, a rep for the actress confirmed to Access Hollywood on Sunday evening.

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As it turns out, Justin popped the question on his birthday.

"Justin Theroux had an amazing birthday on Friday, receiving an extraordinary gift when his girlfriend, Jennifer Aniston, accepted his proposal of marriage," a rep for Justin told People.

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Jennifer, 43, and Justin, 41, have been dating for over a year.

-- Eric Anderson

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