Gomez sports a Taylor Swift Reputation Tour hoodie while out and about in Los Angeles.
"I'm grateful for those I surround myself with. And this woman right here happens to be one of my favorites. Love our tradition and I love you," wrote the "Hands to Myself" singer in a sweet Instagram pic posted the day after their reputation show.
Reuniting onstage for the "Look What You Made Me Do" singer's Rose Bowl concert, the longtime besties serenade the crowd with Gomez's hit "Hands to Myself."
The two arrive at the 2016 Grammy Awards.
The two hug at the 2016 Grammy Awards.
During the 2016 iHeartRadio Music Awards, the iconic pair pose with "Starlight" singer Serayah.
The two appear together at the 2013 Billboard Music Awards.
The two embrace during the 2016 iHeartRadio Music Awards.
The "Bad Liar" singer gives her bestie a tight hug backstage of the 2016 iHeartRadio Music Awards. That night, Swift won four awards—Female Artist, Tour, Meme-able Moment and Album—and Gomez won TripleThreat.
The two perform onstage during Swift's 1989 tour show in Los Angeles on Aug. 26, 2015.
The two appear at the 2015 MTV VMAs.
"Happy birthday my nugget. #girlsnighttothefullest," writes the "Wolves" singer on Instagram for Cabello's special day.
In celebration of Camila Cabello's 18th birthday in 2015, the "Havana" singer surrounds herself with famous friends, including the "Delicate" pop star, the "Back to You" singer, Jaime King, Hailee Steinfeld, Sarah Hyland, Joey King, Hayley Williams and the Haim sisters.
The two hang out at the 2014 American Music Awards.
The two grab lunch together in West Hollywood in 2015.
They know they both got it.
The two hang out at the 2014 Met Gala, as seen in this Instagram video.
The two go out for lunch at Paradise Cove in Malibu, California in 2012.
The besties join Nicki Minaj and Katy Perry at the 2011 American Music Awards.
Are they out of the woods yet? In a funny Instagram post, the besties pose in major greenery and joke about Swift's 2016 hit.
At the 2011 American Music Awards, the star besties have some fun and make their 3-D glasses and neon sticks look glamorous.
The two hang out at the 2011 American Music Awards.
The two look adorable at the premiere of Another Cinderella Story in 2008.