Congratulations to Big Time Rush singer Carlos Pena Jr. and Alexa Vega! The couple tied the knot yesterday (Jan. 4).

Vega, 25, is best known for starring in 'Spy Kids,' while Pena is in one of the best-loved boy bands on the planet, complete with a Nickelodeon series.

Vega's on her second marriage after being hitched to Sean Covel for two years. They divorced in July 2012. Vega and Pena went public as a couple later that year and have been attached at the hip -- and adorable together -- ever since.

The couple, feted by a small group of family and friends, exchanged vows at the Grand Velas Riviera Nayarit in Puerto Vallarta, Mexico. They each posted gorgeous and gushy photos from their trip, including a shot of the resort's landscape, matching "LexLos" hoodies and a cute couple shot in a pool. You can check out their pics, as well as some adorable tweets about the wedding, below. Congrats to the happy couple!