Taylor Swift and Travis Kells make a surprise appearance at the "Saturday Night Live" season debut.

Incredibly, even though Taylor Swift and Travis Kells are probably the most famous duo in the world right now, we had never seen a PDA photo of the two until last night. (The closest we got was a picture of Swift and Kelce walking side-by-side as they left Arrowhead Stadium in Kansas City on September 24.) Swift and Kelsey were in New York last night, and both made surprise cameos on Saturday Night Live's Season 49 debut. The two were later photographed holding hands as they headed to the SNL after-party and as they left the party. [According to People, Swift and Kelce both made unexpected appearances on last night's show, with Kelce making a cameo at the end of a sketch parodying the NFL frenzy surrounding their romance, and Swift introducing musical guest Ice Spice's second performance. (Swift only uttered four words, "Once again, Ice Spice," but her appearance was met with excitement.)

Prior to SNL, the two had a dinner date at Nobu in New York City. [On Wednesday, they attended the Los Angeles premiere of the concert film "The Eras Tour" and then headed to Kansas City to watch the Chiefs play the Denver Broncos on Thursday night (Kelce was the Chiefs' tight end). At some point, both Swift and Kelce arrived in New York City by Saturday night. This week's game was the third Chiefs game Swift attended in three weeks.

According to Us Weekly, on Saturday night Swift "appeared in a black corset top and matching pants, paired with a delicate gold choker, plaid coat, and her signature red lipstick." Kells wore a cream jacket with bluebirds on the front and matching slacks.

According to Page Six, after dining at Nobu, Swift and Kels arrived at 30 Rock (where SNL is taped). Travis was a surprise. He and Taylor showed up right before the show started."

At the after-party, held at Catch Steak in the Meatpacking District, the couple was seen kissing and getting "good," arriving at the restaurant hand in hand at 2:20 AM and leaving around 4 AM. 'Everyone was in a good mood, having a good time. [Taylor] was seen chatting with the evening's musical guest Ice Spice and her friends."

Also in attendance were fellow new couple Pete Davidson and Madeline Klein, Lorne Michaels (creator of SNL), Dave Chappelle, Michael Che, Joe Keely, and Colin Jost.

Although Swift and Kelce's relationship has only just begun, Us Weekly magazine reports that the two are "getting closer by the day."

According to Page Six, Kelce was injured in a recent game that Swift missed (October 8 against the Minnesota Vikings), so Kelce joked that Swift was his "good luck charm," according to the report. Swift said, "I cheer on Travis at football games and have the time of my life. She and her friends have fully embraced this era and are having so much fun being there." She added, "Taylor has worked very hard this past year, so it's fun for her to bring all of her friends and let loose and show her support."

Dinner at Nobu, a cameo on SNL, partying until 4 a.m. in New York City-when you're the most famous couple in the world, that's apparently how you do a date night.