Selena celebrated her 30th birthday with friends, including Taylor, 32.
Selena wrote on her Instagram: "30 years old, nerdy, valuable."
Gomez wore a Taylor Swift "Reputation Tour" sweatshirt while out in Los Angeles.
"I am grateful to the people around me. And this lady happens to be one of my favorites. Love our heritage, I love you," the singer, who sang "Hands to Myself," posted a sweet Instagram photo the day after their reputation show.
On the stage of the Rose Bowl concert, which sang "Look What You Made Me Do," the pair reunited with their long-time girlfriends to sing Gomez's hit song "Hands to Myself."
The two attended the 2016 Grammy Awards ceremony together.
The two embraced at the 2016 Grammy Awards.
At the 2016 iHeartRadio Music Awards, the iconic duo posed with Starlight singer Serayah.
The two attended the 2013 Billboard Music Awards together.
The two embraced at the 2016 iHeartRadio Music Awards.
The singer who sang "Bad Liar" gave her girlfriend a tight hug backstage at the 2016 iHeartRadio Music Awards. That night, Swift won four awards — the Female Artist Award, the Concert Tour, the Meme Moment Award and the Album Award — while Gomez won the TripleThreat Award.
On August 26, 2015, the two performed on stage on Mold's 1989 Los Angeles tour.
The two appeared at the 2015 MTV Video Music Awards.
The two attended the 2014 American Music Awards together.
In 2015, the two had lunch in West Hollywood.
In 2012, the two had lunch together in Paradise Bay, Malibu, California.
The two attended the 2011 American Music Awards.