The Machete Kills star, 25, married her Big Time Rush singer fiancé, Carlos Pena, Jr. on Saturday, her rep confirms to PEOPLE.
"We are so thrilled and blessed that we were able to have all of our close friends and family join us on our special day," the couple tell PEOPLE.
Vega took to Twitter to share her pre-nuptial excitement on the evening of her wedding day.
"Wow ... I'm getting excited nervous!!!! Ahhhh!!! #CountDownToAisle," she wrote.
Vega and Pena Jr., 24, exchanged vows at the Grand Velas Riviera Nayarit in Puerto Vallarta, Mexico. The actress also shared a snapshot of the couple in matching HBsuper hoodies on Instagram with the hashtags, "#DestinationWedding #Mexico."
In September, Vega (whose two-year marriage to producer Sean Covel ended in 2012) told PEOPLE that Pena Jr. was "pretty incredible."
"I've never met anybody who is as driven and as motivated and inspires me as much as Carlos does," she said at the time.
Mrs. PENAVEGA.— Alexa Vega (@alexavega) January 5, 2014