Travis Kelce said he and Taylor Swift were feeling on top of the world after the superstar couple's success-studded week.

Swift won two Grammy Awards last weekend to take her overall total to 14 in her career while Kansas City Chiefs tight end Kelce helped his side to win their third Super Bowl in five years in Las Vegas on Sunday.

Swift chugged a drink, bit her nails, buried her face in her hands and hugged her friends throughout a nerve-shredding Super Bowl LVIII.

At the end, it was hugs and kisses for Kelce on a field smothered with glitter and ticker tape as the world digested an epic, dynasty-creating victory over the San Francisco 49ers.

Swift was central to the Super Bowl story all week but at the conclusion of the 25-22 overtime win she was just another exhausted, ecstatic fan like so many around her, happy to share superstar billing with Chiefs quarterback Patrick Mahomes - for one day at least.

Swift had been performing in Tokyo on Saturday, and when she took her seat at the Allegiant Stadium, it ended a week-long will-she-won't-she saga that had dominated the lead-up to the football event of the year.

Taylor Swift cheers on beau Kelce at Super Bowl

Her arrival some two hours before kickoff had fired an almost palpable frisson around the stadium and social media rapidly filled with pictures and video footage of the singer.

The cameras followed her as she walked through the bowels of the stadium with friends Blake Lively and Ice Spice dressed in a black top, black jeans and with a red Chiefs jacket slung over her shoulder.

A punishing travel schedule in which she had flown from Japan to the US for a brief stop before she heads on the long flight down to Australia for seven more sell-out concerts meant her presence had been far from a foregone conclusion.

(Production: Oliver Regan)