Kristen Stewart Relationship Update 2015: 'American Ultra' Actress Reportedly Married to Alicia Cargile

Robert Pattinson and Nikki Reed are not the only "Twilight" stars on the engagement trail. It appears the Kristen Stewart may have also taken the plunge with girlfriend, Alicia Cargile.

The 25-year old actress reportedly let a big secret slip at the premiere of her latest film, "American Ultra." Kristen is known for keeping her private life super private, but thanks to a few sips of bubbly, Robert Pattinson's former gal may have admitted her nuptials to special effects producer Alicia Cargile.

According to "OK! Magazine" via HollywoodLife.com, Kristen was at a party for the stoner assassin movie in Los Angeles when she was asked by someone at the party how she was doing that night, to which she replied, "I miss my wife!"

The eyewitness who overheard it all, also told the publication, they congratulated Kristen on the nuptials and she quite awkwardly expressed her gratitude. "When I congratulated Kristen on being married, she gave me a quirky smile and coyly said 'thanks!' and then ran off to celebrate with friends and costars, who were hugging and congratulating her all night," said the source.

Apparently, the wedding bells do not come as a huge surprise to those closest to the "Clouds of Sils Maria" actress, even though it has only been a few months. A friend told "OK!," Kristen has even called Alicia "the One."

Kristen's mother also spoke of the pair allegedly with "The Sunday Mirror." She said Alicia was a "lovely girl" and accepts who her daughter is dating.

"I've met Kristen's new girlfriend, I like her. What's not to accept? She's a lovely girl" and "She's my daughter, I'm just her mom so she knows I would accept her choices. I feel like people need to be free to love whoever they want. I accept my daughter loves women and men. It's OK to be who you are in my world. We all choose our friends so we should be free to choose our lovers."

The ceremony was reportedly kept secret because both Kristen and Alicia are not fans of the public eye.

"Alicia hates the attention more than Kristen," the same friend explained to "OK!" "They just get each other, and that's what makes it work."