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Gigi Hadid

Keith Johnson/Bauer-Griffin/GC Images

Hey, when it's hot, and you're hot...

Gigi Hadid turned heads on Friday, more than usual, as she was spotted arriving with boyfriend Joe Jonasat BFF Taylor Swift's concert at Los Angeles' Staples Center.

The 20-year-old model sported a skimpy black bodysuit that showed quite a bit of side boob and cleavage, paired with a black and white net-design mini skirt and gray and white sneakers.

Hadid and Jonas, 26, began dating at least a couple of months ago and have showcased several PDA moments. In July, they were spotted together at Disneyland.

"I like them together," Joe's brother Nick Jonas, 22, told E! News that month. "It's a good thing."

Gigi Hadid, Joe Jonas

Keith Johnson/Bauer-Griffin/GC Images

Hadid and Jonas have even hung out together with Swift, 25, who used to date the pop singer, and her new boyfriend and EDM performer Calvin Harris, 31.

Hadid and Jonas were among several celebrity attendees of Swift's concert on Friday and had also gone to see her perform in June.

The singer is on her 1989 tour and has brought many celebs, including some of her besties and other "Bad Blood" co-stars, onstage, growing her "squad" more and more.

At Friday's concert, Swift performed with guest singer-songwriter Ryan Tedder from OneRepublic and appeared with Los Angeles Lakers star Kobe Bryant. In addition to Hadid and Jonas, the list of other celebrities in attendance included actress Helen Hunt and actor Mark Wahlberg.