Met Gala 2015
Actor Robert Pattenson and FKA twigs arrive at the Metropolitan Museum of Art Costume Institute Gala 2015 celebrating the opening of China: Through The Looking Glass, in Manhattan, New York 4 May 2015Reuters

Robert Pattinson and fiancee FKA twigs made their red carpet debut as a couple at the Metropolitan Museum of Art Costume Institute Gala 2015 in New York City.

The Remember Me actor looked dapper in a tuxedo, while the 27-year-old singer, whose real name is Tahliah Debrett Barnett, wore a Christopher Kane creation that featured body parts, including a penis.

Met Gala 2015
British actor Robert Pattinson poses with British singer FKA twigs as they arrive for the Metropolitan Museum of Art Costume Institute Gala 2015 celebrating the opening of China: Through The Looking Glass, in Manhattan, New York 4 May 2015Reuters

Last month, during an interview with Vulture, rapper T-Pain said that the Twilight actor and FKA twigs were set to be married.

However, the 29-year-old rapper, whose real name is Faheem Rashad Najm, later took to his Instagram account to reveal that it was an April Fools' joke.

It was earlier reported that Pattinson is planning to invite former girlfriend, American actress Kristen Stewart to his wedding.

Unlike Stewart, twigs is very open about her relationship with Pattinson.

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."