Taylor Swift has recalled how Travis Kelce appeared uncharacteristically "nervous" before he proposed to her.

The music superstar and National Football League (NFL) player announced their engagement in August after dating for around a year.

During an appearance on The Tonight Show Starring Jimmy Fallon on Monday night, Taylor displayed her diamond engagement ring to the audience and revealed Travis had ordered the stunning design some time before he popped the question.

"He custom-designed it with this amazing jeweller. I look at it constantly. It doesn't feel in any way normal for me," she began, before gushing over her fiancé. "He's just my favourite person I've ever met. No offense to everyone else, but the fact that this is the person that I get to hang out with every day."

Taylor went on to recount how Travis proposed to her in a flower-filled garden at his home right after they recorded an episode of the New Heights podcast with Jason Kelce.

Amid the conversation, the Opalite hitmaker revealed the title of her twelfth studio album, The Life of a Showgirl.

"I think for Travis, the podcast was sort of a distraction, a ruse, to keep me (from) not looking out the windows of the house. Every time he does a podcast, it's not like he blacks out all the windows," the 35-year-old smiled. "There are blackout drapes on every single window of the house... He's walking around sort of nervous about the podcast. I've never seen this dude nervous, ever. So, he's like, 'Do you want to go and walk around the backyard and have a glass of wine?' I'm like, 'I'm always going to want to do that.'"

Elsewhere in the interview, Taylor noted that she shared her engagement news with all of her close friends before posting about it on social media.

However, there was one person she forgot to tell - Ed Sheeran.

"He doesn't have a phone... When I'm going through my texts and being like, 'Who have I texted the last month of my life?' He just wasn't there... This is one of my absolute favourite people on the planet. When the news came out, I was like, 'Oh my God, I forgot to call Ed!' He's like family, I love him. But he doesn't have a phone," she sighed.