By Alexa Rae Johnson

Adam Levine may play the role of Keira Knightley's ex-boyfriend in new film Begin Again, but his real life leading lady is Namibian supermodel Behati Prinsloo.

The 35-year-old Maroon 5 lead singer attended the film's New York premiere on Wednesday evening and brought along his 25-year-old fiancee.

And while it is Adam who stars in the film, all eyes were on Behati and her plunging red dress as the couple walked the red carpet.

Beautiful Behati donned an eye-catching red sleeveless shift dress that showed off her cleavage with a deep plunging neckline.

The future Mrs. Levine wore her hair back into a twisted ponytail and highlighted her eyes with a thick layer of smokey eyeliner.

Her fiance, the suave Voice star, looked sharp in a metal gray suit without a tie.

The film, Begin Again, follows the dramatic relationship between a young singer-songwriter, played by Knightley, and a music executive, played by Mark Ruffalo, and how their chance meeting turns into a professional collaboration.

The romantic drama hits theaters June 27.

Just around the corner: Levine and Prinsloo are expected to wed in Mexico on July 19

However, while Adam may be eagerly anticipating his wedding, he has had to deal with some romantic turmoil.

Levine has been forced to denyhaving a previous physical relationship with actress Lindsay Lohan, after his name was written down as part of a list of her sexual partners.

In an interview with radio host Howard Stern, Adam firmly responded, 'That’s not true... I did not have sexual intercourse with Lindsay Lohan.' -- Daily Mail