Don't say Travis Kelce's sister-in-law didn't warn you...about how awesome it is to be part of his family.

As Taylor Swift's romance with the Kansas City Chiefs star continues to blossom, Kylie Kelce, who is married to his brother Jason Kelce, reflected on what it was like when she joined Kelce family after tying the knot with the Philadelphia Eagles center in 2018.

"I was on the outside at the beginning because I'm married in," she told ABC's Impact x Nightline in an interview set to stream on Hulu Nov. 30 during an episode that focuses on Travis and Taylor's romance. "The most amazing part is that I was welcomed in with open arms."

Kylie—who shares daughters Wyatt, 4, Elliotte, 2, and Bennett, 9 months, with Jason—explained, "They're a pretty small family, so it is a little bit on an adjustment. But it feels so warm and inviting like I think a big family feels, like it was sort of second nature to hop in there. And it is as fun as you think it is."

Amid her growing relationship with Travis, Taylor has spent some quality time with his family—namely his and Jason's parents Donna Kelce and Ed Kelce, whom she's sat with during Chiefs games.

And Travis can't calm down over the support.

"I just thought it was awesome how everyone in the suite had nothing but great things to say about her, the friends and family," he shared on the Sept. 27 episode of his and Jason's New Heights podcast, days after the "Wildest Dreams" singer attended one of his games for the first time. "Everybody was talking about her in [a] great light."

And it seems Taylor has gotten Mama Kelce's stamp of approval. "He's happier than I've seen him in a long time," Donna told WSJ. magazine in an article published Nov. 20. "God bless him, he shot for the stars!"⁠

Travis' star power, which was already high as the tight end and one of the top players in the NFL, has risen since he began dating Taylor. In fact, his entire family has had to adjust to being in the spotlight even more.

"It's just one of those things in life that just, somehow, things happen and then just exponentially, they just grow, and this year has just been one week after another after another," Donna told Impact x Nightline for its upcoming episode, "and it just seems like it's never going to stop."

As for Kylie, she told Spectrum News in an interview posted Nov. 19, "It's not particularly my cup of tea to be in the spotlight or in front of a camera. I was a communication major in college. I love to be behind it. That's my bread and butter."

She later responded to a media report that interpreted her comments to mean she was trying "avoid the Taylor Swift spotlight." 

"I said it's not my cup of tea to have attention on me," she said in a Nov. 22 TikTok. "I didn't say that. That seems like a stretch to me. You're reaching!"

Look back at Jason and Kylie's own love story below:

Jason Kelce doesn't want you to know he met his wife Kylie Kelce on a dating app. Too bad she wasn't afraid to reveal how their relationship began in the Prime Video Kelce documentary. 

"Jason won't let me lie about this," Kylie shared. "We met on Tinder."

When Kylie first encountered Jason's profile, she didn't recognize the Philadelphia Eagles center, explaining, "None of his pictures showed Eagles football,"

However, after she and her friends thought he looked "kind of familiar," they did what millennial women do best: A Google image search. And when Kylie put a name to the face, she was confident she was being played.

"It can't be him," she remembered thinking, "it's a catfish."

Still, she took a chance. And in 2015, she shared the first photo of the couple on Instagram, writing, "Thank goodness you swiped right too."

While Jason and Kylie ultimately hit it off, their first date didn't go according to the game plan. 

"You fell asleep 45 minutes after I got there on the bar table because he was too drunk,"  Kylie revealed on Jason's New Heights podcast, which he co-hosts with his brother Travis Kelce.

Though he was admittedly "inebriated," Jason said, "I was sober enough to know it was the most beautiful woman I had ever seen in my life. It was love at first sight."

Still, Kylie admitted it took her awhile to fully commit to the idea of being in a relationship with a professional athlete.

"I didn’t tell anyone who I was dating," she explained. "The last thing I wanted was to be like, 'I think I’m falling for this guy and then have him be like, 'Oh, I have six other girls waiting,’ which is the stereotype of a football player."

However, in hindsight, Kylie admitted. "It's entertaining that there was any hesitation at all." 

"Our dynamic made it so not that I was in a relationship with a professional athlete," she continued, "it was very much that I was in a relationship wth Jason whose profession was football."

She said yes! But only after putting up with some of Jason's B.S. 

During the Sept. 7 episode of the New Heights podcast, the couple shared their engagement story, which Jason prefaced by admitting he is not a "romantic" person. 

The NFL star proposed to Kylie in his car while they were leaving her parents' house. 

"I couldn’t figure out how to inconspicuously go back into the house," he explained, "because if I was like, 'Hey I gotta go talk to you dad for a second,’ it would have been very odd of me to say that."

Instead, Jason went with, um, option No. 2: "When we got in the car, I said, 'Ky, I’m sorry but I gotta take a s--t.'"

However, Kylie immediately knew Jason was up to something when he returned minutes later. "He came back out and I said, 'Jason, I know you didn’t just go in there and take a s—t, it usually takes you 20 minutes.'"

Jason then cut the bulls--t and got down to business, Kylie continued. 

"He said, 'This isn’t the most romantic way to do this,'" Kylie recalled, "and I immediately started crying because I knew what was happening only because he referenced being romantic."

Two months after winning his first Super Bowl, Jason added an even more special ring to his collection when he and Kylie tied the knot in Philadelphia. 

To celebrate their one-year wedding anniversary, Kylie shared some throwback pictures from their wedding day.

 "One year ago today we stood in front of our closest friends and family and vowed our love and commitment to each other," she wrote. "I am so beyond grateful that I get to share my life with this man."

The couple welcomed their first daughter, Wyatt Elizabeth Kelce, on Oct. 2. And to celebrate Wyatt's first birthday, Kylie shared several photos from the delivery room on Instagram.

"One year ago this little bug was snuggled up on my chest for her first night out in the world. I will never get tired of your cuddles, Wy," she wrote. "Also, swipe to see what is truly one of my favorite photos in my phone. Mid-push, veins popping out of my head, and the biggest cheesin grin on Jason’s face. Minutes later, we were parents."

The Kelces welcomed their second child, daughter Elliotte Rya Kelce, into the world on March 4.

Kylie shared a sweet video of Elliotte to celebrate her six-month birthday, writing, "Full of smiles, laughs, and sweetness."

And, for her first post of the new year, Kylie captioned a photo of Elliotte, "Best thing to come out of 2021."

When Jason and Travis faced off against one another at the 2023 Super Bowl, Kylie had a very special guest attending  the game with her. 

"Kylie's bringing her OB because she's going to be 38 weeks pregnant at the game," Jason said on the podcast. "That could be a super Kelce Bowl. If she has a baby in the stadium, it's officially scripted!"

Travis joked, "We're in The Matrix, there's no f--king way."

While Uncle Trav may have won the Kelce Bowl when the Chiefs defeated the Eagles, Jason received an even sweeter prize two weeks later when he and Kylie welcomed their third daughter.

"Yesterday little lady #3 joined us," the couple shared on Instagram. "Bennett Llewellyn Kelce8lbs. 5oz. and 21inches long."

Their daughter was named in honor of Jason's grandmother through Bennett's middle name, Llewellyn.

"It's Grandma Mary's maiden name," Jason shared on New Heights. "I wanted to honor Grandma Mary, who is now resting in peace. She had a good run."

Kylie and all three daughters visited Jason at the Philadelphia Eagles training camp, with the couple sharing pics in a joint Instagram post. 

"Here for the Rita's and obstacle courses with dad after practice," the caption read.

Jason's dad skills were on full display in the Kelce documentary on Prime Video, in which Kylie shared her honest thoughts on Jason's retirement.

"I always tell people that no matter what happens with football, how it ends," she said, "I would like him to retire when he's still able to get down on the floor and play with our kids comfortably."