Kristen Stewart
Kristen Stewart allegedly commented on Robert Pattinson\'s girlfriend, FKA Twigs\' appearance. Jason Merritt/Getty Images

American actress Kristen Stewart allegedly commented on Robert Pattinson's girlfriend, FKA Twigs' appearance.

According to a report in Hollywood Life, the 24-year-old Camp X-Ray star feels the 26-year-old singer, whose real name is Tahliah Debrett Barnett, "looks are nothing compared to Rob's rugged handsomeness".

"In a conversation with close friends at a recent party in Silverlake, Los Angeles, Kristen dissed Twigs' looks," a source told the website. "Kristen has become very jealous of Rob's new romance."

"She was being really hard on Twigs looks, calling her fugly," the insider added. "She even commented that Rob can't be dating her because of her looks."

In 2012, the 28-year-old actor ended his relationship with Stewart, his Twilight co-star and girlfriend of four years, after it was confirmed that she cheated on him with British director Rupert Sanders.

Stewart and Sanders, who worked together on Snow White And The Huntsman, were photographed kissing in the Hollywood hills.

Meanwhile, Pattinson and FKA Twigs are getting serious about their relationship and were recently spotted cosying with each other on a beach bed in Miami.

Unlike Stewart, FKA Twigs is very open about her relationship with the Remember Me actor.

At the Mercury Music Prize Awards, Twigs was asked how her relationship with Pattinson was going, to which she replied: "Very good, thanks."

Adding on, during an interview with The Guardian's magazine, The Observer, she called Pattinson "the man that I love."