Laura Prepon engaged to Ben Foster

A day after Orange is the New Black star Samira Wiley announced her engagement, another cast member revealed she's also planning to tie the knot soon. Laura Prepon is engaged to Warcraft actor Ben Foster, a source confirms to The Hollywood Reporter.

The couple made their red-carpet debut at the Girl on the Train premiere in New York on Tuesday evening, where Prepon showed off her shiny engagement ring. The actress, who appears alongside Emily Blunt in the film adaptation, paired her new bling with a lace Nha Khanh dress and Forevermark diamonds jewels.

Getty Images

Prepon, 36, and Foster, 35, were first spotted together in July, but have stayed relatively mum about their relationship. This will be the first marriage for both.

In addition to starring in The Girl on the Train and OITNB, Prepon's next project will be The Hero, in which she'll star opposite Krysten Ritter and Nick Offerman.

Foster most recently starred in Warcraft: The Beginning and Hell or High Water. His upcoming film credits include Ron Howard's Inferno and Scott Cooper's Hostiles.

Read more: 'Orange Is the New Black' Star Samira Wiley Engaged to Show's Writer Lauren Morelli