The 'Captain America' star tied the knot over the weekend in a low-key ceremony with his longtime girlfriend.
ET has learned on Sunday that the Avengers star, 42, exchanged vows with the Warrior Nun actress, 26, over the weekend.
The very low-key ceremony -- held at a private estate in Cape Cod, Massachusetts, on Saturday -- was reportedly a very well-kept secret, with guests required to sign NDAs and give up their phones during the ceremony, Page Six reports.
ET has reached out to the couple for comment.
The adorable couple reportedly invited those close friends and family for the intimate nuptials -- some of whom included Robert Downey Jr., Jeremy Renner and Chris Hemsworth.
It appears some of his Avengers co-stars might have been at the event. On Saturday, Jeremy Renner, Robert Downey Jr., his wife, Susan Downey, Chris Hemsworth and his wife, Elsa Pataky, were spotted enjoying a meal at Contessa, also in Massachusetts. An onlooker tells ET that the stars "looked like they were having a good time and were talking and laughing."
Additionally on Sunday, Downey Jr., Scarlett Johansson, and her husband, Colin Jost, enjoyed dinner at Puritan & Company in Cambridge, Massachusetts, which isn't too far from where Evans got married. An onlooker tells ET that the celebrities "were in great moods and were extremely happy and gracious."
"There were lots of smiles at the table," says the onlooker. "They ordered the smoked bluefish pâté, Parker House rolls, seafood risotto, and veggies. They stayed for a few hours."
A source told ET at the time that the two had already been together for over a year.
"They are very in love and their relationship is serious," the source said. "Chris has never been happier. His family and friends all adore Alba."
For those unfamiliar with Baptista, she is perhaps best known in the U.S. for her Netflix series, Warrior Nun, which marked her English-language debut.
In addition to English and her native Portuguese, she also speaks Spanish, French and German.
Congrats to the happy newlyweds!