Selena Gomez kicked off her 33nd birthday celebrations in style — and she wasn’t alone.

Her longtime best friend and pop powerhouse Taylor Swift was right by her side as the Only Murders in the Building star rang in another trip around the sun with her closest pals.

In one image, uploaded to Gomez’s Instagram, the stars were pictured sitting in what appeared to be a ball pit as the birthday girl playfully reached toward the camera.

Dressed in a sequined silver jumpsuit, the singer and actress looked radiant as she posed with Swift, who sported her signature red lip and a black minidress.

Although the Sunset Blvd hitmaker did not disclose any party details, the gathering appeared to have a 70s disco theme and be held at the historic Hollywood Roosevelt Hotel.

In an early birthday celebration (her actual birthday lands later this week), Gomez shared a glowing Instagram post reflecting on what she called ‘the most beautiful year of my life.’

Selena Gomez kicked off her 33rd birthday celebrations in style with her longtime best friend and pop powerhouse Taylor Swift

In an early birthday celebration (her actual birthday lands later this week), Gomez shared a glowing Instagram post reflecting on what she called ‘the most beautiful year of my life’

‘As I prepare to celebrate my 33rd birthday, I can’t help but reflect on the incredible journey that has brought me here,’ Gomez wrote in her caption. ‘This past year has truly been the most beautiful year of my life, and I owe so much of that to all of you.’

Gomez continued, thanking her followers for their support through ‘highs and lows’ and promising to carry that love into her next chapter.

The Cruel Summer hitmaker wasn’t the only VIP in the room — Gomez’s fiancé, music producer Benny Blanco, was also in attendance.

The couple shared sweet moments throughout the night, including a passionate kiss caught on camera that had fans swooning.

In another image, taken on the dance floor, the pair looked happier than ever as they wrapped their arms around each other and swayed to the music.

Fellow singer and former Disney star Sofia Carson, 32, was also in attendance to help Gomez ring in her birthday with her loved ones.

For her seemingly disco-themed birthday bash, Gomez and her guests were all decked out from head-to-toe in sequin-laden ensembles.

The birthday girl, who was celebrating just days ahead of her actual birthday on July 22, looked fabulous in a $615 dark, sparkly jumpsuit with a plunging neckline from Nadine Merabi paired with a cream-colored, faux fur coat and retro sunglasses.

The Cruel Summer hit maker wasn’t the only VIP in the room — Gomez’s fiancé, music producer Benny Blanco, was right by her side, too

‘This past year has truly been the most beautiful year of my life, and I owe so much of that to all of you,’ the Grammy nominee captioned her post

Gomez continued, thanking her followers for their support through ‘highs and lows’ and promising to carry that love into her next chapter

For her seemingly disco-themed birthday bash, Gomez and her guests were all decked out from head-to-toe in sequin-laden ensembles. The birthday girl, who was celebrating just days ahead of her actual birthday on July 22, looked fabulous in a dark, sparkly jumpsuit with a plunging neckline

She also accessorized with layers of icy diamonds around her neck as she rocked tennis necklaces from Brilliant Earth.

She had long, raven black hair styled in bouncy curls and added a pop of color to her look with a bright red lip, not too unlike the signature lip that her best pal Taylor Swift was also sporting.

The songstress rocked a long-sleeved, black dress for her party look for the soirée.

And Blanco dressed up in animal-printed button-down layered with a dark, velvet blazer jacket.

While the bash served as an early celebration — it was a clear reflection of the support system and creative energy surrounding her.

The past few years have marked a major turning point for Gomez both personally and professionally.

In late 2023, she confirmed her relationship with Blanco, and in late 2024, the couple announced their engagement.

The two also collaborated on a surprise joint album that gave the world a personal glimpse into their relationship.

This comes ahead of her wedding plans set for September as she prepares to tie the knot with Blanco.

At some points during the soirée and in her party snaps, Gomez wore a cream-colored, faux fur coat over her sparkly garb and also wore a pair of oval-shaped, green-tinted sunnies for her circa 70s party theme

And Blanco dressed up in animal-printed button-down layered with a dark, velvet blazer jacket

As part of her snapshot, she also shared  a snapshot of herself sitting alone in the middle of the large rooftop space at one point at the end of the party

A source exclusively told DailyMail.com last week that Gomez and Blanco’s upcoming nuptials will be in Montecito, California with a star-studded guest list including Swift.

‘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,’ the insider revealed.

The pair will be celebrating their union with a two-day event at the ‘royal’ location, and the insider also revealed Gomez was having concerns over her best friend.

Another source said Gomez tried her best to ‘accommodate’ Swift’s busy schedule as she wanted her best friend and her NFL star beau to be in attendance.