Emma Watson And Serena Williams Seen Backstage At Taylor Swift Concert, Posing With The Singer

Taylor Swift's friend list is getting longer each day, and the songstress now includes actress Emma Watson on it. Watson not only attended Swift's London performance over the weekend, she also posed with the singer for photos.

The picture, posted by British singer Lauren Aquilina, was reportedly clicked backstage at the “1989” concert in London Saturday. “[I] spent tonight surrounded by badass girls and couldn't be happier about it,” wrote Aquilina, who opened for Swift's show.

“I am watching ‪@taylorswift13. i am literally in awe. i just opened for her. I am dead. ‪#1989tour,” Aqualina said in an earlier tweet. The 20-year-old also appears in the photo along with Martha Hunt, Karlie Kloss and “Echosmith” singer Sydney Sierota.

Both Watson and Swift look happy posing together in the picture. The “Harry Potter” actress even imitated Swift's signature “surprise face” look. Watson wore a striped black-and-white T-shirt in the picture, while Swift was dressed in a dazzling white outfit for her concert.

Swift has been a longtime fan of Watson's and acknowledged admiring her for her 2014 United Nations speech about the importance of feminism and gender equality. She said in a previous interview that Watson explained feminism in a very “intellectual, beautiful, poignant way” and wished that an actress would have done the same when she was a child.

According to US Weekly, Swift also brought six of her renowned celebrity girl pals, including Martha Hunt, Kendall Jenner, Serena Williams, Karlie Kloss, Gigi Hadid and Cara Delevingne, onstage during the same night. She posted the picture on her Instagram. The Grammy Award-winning singer gave a stunning performance with the girls on her song, "Style.” Hadid later tweeted “this is love ‪#1989TourLondon,” along with a picture of the group.

The “1989 World Tour” is Swift's fourth concert tour, meant to support her fifth studio album “1989.” Released in October 2014, “1989” sold 1.287 million copies during its first week of release and became the best-selling album of the year 2014 in the U.S. market, with over 4.95 million copies sold.