Taylor Swift attended her BFF Selena Gomez’s 33rd birthday party alongside the latter’s fiancé, Benny Blanco, and close pals.

The “Cruel Summer” singer was spotted posing alongside the “Only Murders in the Building” actress amidst a sea of balloons in a series of photos posted on Instagram Sunday, capturing the essence of a ’70s disco-themed party.

Swift looked chic, wearing a black long-sleeved dress with her iconic red lip, while Gomez sported a sequined jumpsuit and fur jacket.

At the event, Gomez, 32, was also photographed beaming on a rooftop with friends, including Sofia Carson, and sharing a heartfelt kiss with Blanco, 37.

“As I get ready to ring in my 33rd birthday, I’m filled with gratitude reflecting on the remarkable journey that has brought me to this moment,” the “Calm Down” artist captioned the slideshow.

“This past year has truly been the most beautiful year of my life, and I owe so much of that to all of you.”

“Thank you for your unwavering love and kindness. Whether you cheered me on from the sidelines, shared in my highs and lows, or simply offered a listening ear, you have made this year unforgettable,” the “Emilia Pérez” actress continued.

“I am extremely humbled and insanely appreciative of all your love.”

Gomez — who turns 33 on Tuesday — shared that she was “filled with excitement and hope for what’s to come,” adding, “I look forward to sharing more moments with all of you, creating new memories, and continuing this beautiful journey together. MADLY LOVE YOU ALL 🥳.”

The birthday festivities came days after a source said that Swift, 35, would be in attendance to celebrate Gomez and Blanco’s nuptials in Montecito, Calif., this September.

“Selena and Benny’s wedding is going to be a two-day event,” an insider told the Daily Mail last week.

“Although it’s for friends and family only, many on the friends list are huge celebrities, including Taylor Swift and Travis Kelce, Selena’s co-stars from ‘Only Murders in the Building’ and music superstars who are Benny’s friends and some he’s also worked with.”

Another insider claimed to the outlet that Gomez tried to “accommodate” Swift’s busy schedule with the wedding date.

“Selena is not having her wedding to accommodate Taylor, but she wants her to attend and she would love for her to be able to go with Travis,” the source said.

Gomez and Blanco got engaged in December 2024 after dating for over a year.