Cara Delevingne runs into ex-girlfriend St. Vincent at New York party

Cara Delevingne came face-to-face with ex-girlfriend St. Vincent during a star-studded party the singer attended with rumored new love Kristen Stewart.

The Twilight star has been linked to St. Vincent, real name Annie Clark, since the pair was spotted together at a comedy show in Los Angeles in late August (16), and Kristen allegedly took the rocker to the New York Film Festival last week (ends07Oct16) as her date, to attend a screening of her new movie Certain Women.

"They spent almost every day together after that," a source told Us Weekly magazine.

The new couple reportedly enjoyed a series of dates in the Big Apple before returning to California, where Kristen was spotted in the audience for the singer's Los Angeles concert on Sunday (09Oct16).

"It's been very romantic," the insider added. "Kristen is always whispering closely in her ear and asking her opinion."

The actress, 26, and 34-year-old St. Vincent have yet to comment on the romance rumors, but on Thursday (13Oct16), the pair went to a party at New York City's Bowery Ballroom, where attendees also included Cara, Taylor Swift, Serena Williams, Zoe Kravitz, Dakota Johnson, Martha Hunt and Karlie Kloss.

The 24-year-old model split from St. Vincent over the summer (16) after a year of dating, while Kristen, who previously dated her Twilight co-star Robert Pattinson, was most recently linked to French singer Soko and her former assistant Alicia Cargile.

The relationship news comes just days after Kristen opened up about her love life in a candid interview with Elle magazine, revealing she isn't "ashamed" or "confused" about her sexuality.

"Things have changed. And not just with me - we're really allowed to encourage this new acceptance and be awesome," she said of changing attitudes about homosexuality and bisexuality across the world.

Kristen had previously touched on her romance with Alicia in a chat with Elle U.K. earlier this year (16), when she admitted their romance wasn't perfect.

"Right now I'm just really in love with my girlfriend," she said at the time. "We've broken up a couple of times and gotten back together, and this time I was like, 'Finally, I can feel again'."