“I can’t believe you’re 18 today.”

By Brian Gallagher for Dailymail.com

02:03 27 May 2024, updated 03:00 27 May 2024

Gwen Stefani is wrapping up the weekend by celebrating her eldest son Kingston, who turned 18 on Sunday, with his father Gavin Rossdale celebrating his son as well.

Kingston is the eldest of three children she had with Gavin Rossdale, singer of the band Bush, to whom she was married from 2002 to 2015, along with Zuma, 15, and Apollo, 10.

The 54-year-old singer — who made a sultry look at the ACM Awards earlier in May — took to Instagram on Sunday, where she shared a video collage of photos of Kingston over the years.

“Happiest of birthday Kingston, my first baby 🙂 I can’t believe you’re 18 today… I love you!” Stephanie said.

The post included a video compilation of the UB40 Kingston Town route, including videos of Stephanie feeding her son baby food.

Photos and videos show him growing older, including a video of him playing the guitar, and he appears to be following in his parents’ musical footsteps.

The post also features a number of snaps with Kingston’s father Blake Shelton posing with the rest of her children.

The post ends with a short video of Kingston saying he has a crystal ball that “tells us the future,” adding, “It really needs to be found.”

Kingston’s father Gavin Rossdale also shared a post celebrating Kingston’s birthday on Sunday.

“Happy birthday, Kingston – 18 today and a huge step towards your future,” Rossdale began his birthday message.

“So far the best journey of my life and I can’t wait to see where it goes from here. I have complete faith in you and deeply admire the man inside you,” he said.

‘You have grace, charm and humility. His famous father added: “You drive your destiny so choose wisely.”

The Bush singer added: “Your musical talent is crazy, and soon the world will hear your heart singing.”

“Follow your inspiration, be curious and keep creating. I couldn’t love you more,” he insisted.

‘I wish you all happiness, health and all creativity. I love you, Dad,” Rossdale concluded.

It was revealed earlier this month that Stefani would be returning as coach for season 26 of The Voice, where the shake-up will see a cast of new judges and one returning to claim his seat once again.

The 54-year-old Undoubted First Lady — whose ex-husband Gavin Rossdale debuted a new girlfriend who is a dead ringer for her — was part of the new lineup that NBC shared on Monday.

Gwen will be joined by two new coaches — rapper Snoop Dogg and singer Michael Bublé — along with Reba McEntire, who has been on the show since Season 24.