During an appearance on SiriusXM's The Morning Mash Up on Monday, Oct. 6, the pop superstar, 35, gushed that Gomez, 33, was the "most beautiful" bride as she married producer Benny Blanco in Santa Barbara, Calif., on Sept. 27.
"Not just the most beautiful bride," she then clarified. "Just like the most beautiful thing I've ever seen."
Noting that she's thrilled for her friends "when they find happiness," Swift added of Gomez, "[I'm] just so happy, and she deserves it so much. And you only wish that for people, you know?"
The "Fate of Ophelia" singer -- who just released her latest album, The Life of a Showgirl, on Friday, Oct. 3 -- was among a number of celebrity guests in attendance at Gomez and Blanco's star-studded wedding. She and fellow musician Ed Sheeran even gave speeches at the reception, a source told PEOPLE.
"At the reception, everyone was letting loose and celebrating them well into the night," the insider said. "The vibe was so much fun."
"They were glowing all night, and both Selena and Benny couldn't stop smiling. There was so much love in the room," the source added.
Swift will soon be a bride herself. The 14-time Grammy winner announced her engagement to NFL star Travis Kelce on Aug. 26, sharing a series of photos from the romantic garden proposal at the time.
The two began dating in 2023, with Swift quickly becoming a fixture at Kelce's Kansas City Chiefs games and the tight end, 36, supporting his now-fiancée at several of her Eras Tour stops around the world.
During an appearance on Heart Radio in the U.K. on Friday, Oct. 3, Swift revealed that, despite having written songs that reference marriage or engagement since she was a teen, she "never thought" about her own wedding until she met "the person" -- aka Kelce.
"You would think that I had been the type of person who would have obsessed over the idea of a wedding my whole life," Swift told Spice Girls star Emma Bunton on the radio show. "But I actually never thought about what I would ever do or what I would want until I met the person."
"So I haven't even thought about that, doing a hen do [U.K. name for a bachelorette party] or whatever," she continued. "This is the first time I have thought about that."
When asked about her thoughts on her new "married life era," Swift told Bunton, 49, that she's still soaking in the engagement.
"I mean, I just got engaged. These things just happened to me," she explained, adding that she's "really excited" for all that's ahead with Kelce.
As for her next chapter with her soon-to-be husband, Swift was quick to dismiss speculation that she will stop making music after she gets married during an interview on The Scott Mills Breakfast Show on Oct. 6.
After host Scott Mills said, "I just saw some fans going, 'Well, she's going to get married and then she's going to have children and then she's going to be the last album,' " Swift laughed and replied that the notion is "a shockingly offensive thing to say."
"It's not why people get married," she insisted. "So that they can quit their job."
Swift continued: "Oh, I know they [the fans] love to panic sometimes, but it's like I love the person that I am with because he [Kelce] loves what I do and he loves how much I am fulfilled by making art and making music."
She said Kelce will always support her passion for music. "There's no point in time where he's gonna be like, 'I'm really upset that you're still making the music. The music thing that I signed up for that I knew you love, I thought you were gonna stop doing that,' " the star told Mills.