Jackson Mahomes toasted his 25th birthday alongside brother Patrick, sister-in-law Brittany and a group of friends while out in Las Vegas this week.

Jackson, the younger brother of Kansas City Chiefs quarterback Patrick Mahomes, celebrated the milestone in Sin City hours before he officially turned 25 on Thursday.

In a pH๏τo shared on his Instagram story, he can be seen posing alongside both Brittany – who stunned in a vibrant multi-colored dress – and her friend Miranda Hogue while out for a meal on Wednesday evening.

However, the Mahomes clan were not just in Vegas for Jackson’s birthday, with Patrick also putting on his latest charity golf event for his ’15 and the Mahomies Foundation.’

The Chiefs icon holds the event in Vegas every year for his foundation, with good friend Travis Kelce and his pop-megastar girlfriend Taylor Swift attending last year’s.

Travis and Taylor were nowhere to be seen this week, nevertheless, as they continue to keep a low profile in the NFL offseason.

Jackson Mahomes celebrated his 25th birthday alongside sister-in-law Brittany in Las Vegas

He also posed alongside older brother Patrick at the Chiefs quarterback’s charity event

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Patrick posed for a snap with Jackson on Wednesday night as they celebrated both the latter’s 25th birthday and the opening party for the ‘Vegas Golf Classic’.

A number of high-profile guests were in attendance, including Hollywood star Rob Riggle, NFL veteran Von Miller and former quarterbacks Johnny Manziel and Matt Leinart.

Patrick and Jackson’s father, Patrick Mahomes Sr, was also given special dispensation by the authorities to fly to Vegas for the event as he continues to deal with the fallout of his DWI arrest.

Mahomes Sr has been arrested multiple times for driving while intoxicated, and as part of his plea agreement from the most recent incident, he has to ask permission every time he wishes to leave the state of Texas.

The golfing itself began earlier in the day on Wednesday at the Shadow Creek Golf Club.

Jackson appeared to confirm that he has a girlfriend last month after posting a ‘hard launch’ video on TikTok.

He shared a clip which showed him kissing the cheek of Shyanne Blankenship before they both mouthed along the words to ‘Poker Face’ by Lady Gaga.

Patrick holds a golf event in Sin City for his ’15 and the Mahomies Foundation’ every year

The younger Mahomes attends every Chiefs game in Kansas City to support his older brother

Patrick’s little brother captioned the video ‘hard launch’ and tagged Blankenship in a reply to one his follower’s comments.

The couple seem to have known each other for a while, even though it is unclear exactly how long they have been an item. Mahomes was pictured with Blankenship at a Drake concert last year.

She also appears to be a Chiefs supporter judging by recent posts on her Instagram cheering the team on for the Super Bowl.

The younger Mahomes himself attends every Chiefs game in Kansas City to support his Super Bowl-winning brother. He has even shared a suite with Taylor Swift before and posed for a picture alongside Donald Trump at the Super Bowl in February.