Jason and Ed Kelce mobbed by fans as they arrive at Kelce Car Jam to celebrate Travis' 35th birthday

Jason and Ed Kelce have arrived for Travis' annual charity event, Kelce Car Jam, in Kansas City on Saturday night, which also fell on the Chiefs' tight end's 35th birthday. 

Travis' older brother and father were expected in town to celebrate his birthday, with his mother, Donna Kelce, also making an appearance at the event. 

Jason is slated to call Monday Night Football for the first time in two days as Travis and the Chiefs host the Saints.

Kelce, who turned 35 on Saturday, is hosting the annual car exhibition once again to help raise money for kids in the Kansas City and Cleveland areas.

It is unclear whether he will be joined on the night by girlfriend Taylor Swift, who is currently enjoying a gap in her international Eras Tour schedule.

The siblings kicked things off Saturday afternoon by hosting Kelce Car Jam - a showcase of muscle cars and swish rides belonging to Kelce and his motoring enthusiast buddies.

In September, it was reported by US Weekly that Swift was planning on attending the event, with the publication saying: 'Swift will likely be on hand to celebrate his October 5 birthday with family and friends at his Kelce Car Jam in Kansas City.'

Speaking on his podcast this week, Travis said he planned to show off the 1970 Chevrolet Chevelle that he famously drove the pop megastar around Kansas City in last year after she went to her first Chiefs game.

'This year is the second year we've done a car show, basically a block-party style event, that will showcase some of the city's top automobiles from the Fuel House, a fun car club out here,' Kelce said.

'And then I guess a bunch of others that are lined up. It's gonna be fun. I should have my old school '70 Chevelle all revved up and ready to rock and roll. If not, I'll bring one of the other cars that I have.' 

'It's always fun to get out here in Kansas City. Kansas City, they show up every single time that I've done anything foundation-wise, and I love them for it.'

Kelce's Chiefs teammate George Karlaftis also showed up for the event about an hour after it began. Patrick and Brittany Mahomes were also in attendance.  

Speculation about Taylor heading to Kansas City has swirled all week with a rumor circling about her hiring out a popular barbecue joint Wednesday night for a pre-birthday celebration.

There have been no confirmed sightings of the 'Bad Blood' singer, however, who has made considerable efforts to mask her flight details and whereabouts since the foiled terror attack at her Vienna concert in August.

Swift wasn’t there to watch the Chiefs beat the Los Angeles Chargers 17-10 last Sunday. But, according to one well-placed source, her absence is no indication that her romance with Kelce is cooling off.

She simply doesn’t see much of her boyfriend when he’s playing away games and this season is expected to mostly stick to attending the Chiefs’ home games at Arrowhead Stadium, potentially including Monday night’s clash with the Saints.

That arrangement means they can instead enjoy quality quiet time at the sprawling $6million home Kelce bought last year in an exclusive Kansas City suburb.