Elizabeth Olsen is engaged to her boyfriend Boyd Holbrook. Mary Kate and Ashley's little sister, Elizabeth Olsen, who was last seen starring in the Spike Lee remake of the Korean horror film "Oldboy," is the second Olsen sister to get engaged in recent weeks.

Elizabeth Olsen said yes to her boyfriend Boyd Holbrook Just days after Mary-Kate Olsen said "yes!" to Olivier Sarkozy's offer of marriage.

A source confirmed to Us Weekly Elizabeth Olsen, is engaged to actor boyfriend Boyd Holbrook. Olsen met Holbrook on the set of their movie "Very Good Girls," in which they both star opposite Dakota Fanning and Demi Moore.

Just Jared reported that the romantic Holbrook asked Olsen's father for permission before popping the question.

Before they say their "I Dos" Elizabeth Olsen will play The Scarlet Witch in the upcoming "The Avengers: Age of Ultron." 

Olsen told E! News "[I'm] very excited. We're doing prep work now. It'sa lot of fun and I think it's going to be really exciting for the fans because it's going to be something they are not expecting. That's why I'm excited."

Elizabeth Olsen and Boyd Holbrook couple have been dating since 2012. At the time, an insider said Elizabeth Olsen and her boyfriend "met from the first read of their movie together, and there was great chemistry there. [Their movie] was filming in New York, which is where Lizzie is from, so she was able to feel pretty at home. [But she] was resistant to getting into a relationship with another actor, but she works so much it's the only way she meets new people."

Elizabeth Olsen's engagement wasn't sudden. Elizabeth Olsen and her boyfriend moved in together in Brooklyn.

A source told Perez Hilton "They've been by each other for a while, taking a lot of couple time... talking about getting engaged. They moved into a place in Brooklyn a few months ago."

Two weeks ago, news broke that Elizabeth's older sister, fashion designer Mary-Kate, has also recently  got engaged to French businessman Olivier Sarkozy, the 44-year-old half-brother of former French president Nicolas Sarkozy. Olsen and Sarkozy were seen looking at engagement rings at Neil Lane. Mary-Kate walked out of the store with a diamond ring.

A source said Mary-Kate, 27, and her French fiance are "talking about trying to get pregnant."

This will be Sarkozy's second marriage. He has two kids with his ex-wife Charlotte Bernard, Julien, 12, and Margo, 10.

A source told Us Weekly "Mary-Kate has made him a better father. She remembers all the kids' special events. She thinks he's a great dad."

Ashley Olsen is now dating Bennett Miller, who directed the movie "Money Ball."

Elizabeth Olsen's latest screen appearance is in the romantic thriller, In Secret.