Kelly Osbourne joins Lego Masters Jr. as host ahead of Aug. 18 premiere

In an exclusive interview with Variety on July 7, 2025, Fox confirmed that Kelly Osbourne will host Lego Masters Jr., a special four-week spinoff of the popular building competition show. Premiering August 18, 2025, the show will give young Lego enthusiasts aged 9 to 17 the chance to team up with celebrity partners and showcase their creativity.

The format pairs each duo with a well-known face. This season’s roster includes Ravi V. Patel, Jordin Sparks, Andy Richter, Alison Sweeney, and Porsha Williams. The teams will take part in building challenges judged by Lego experts Amy Corbett and Boone Langston.

In the final episode, the top teams will face off for a $50,000 prize and the Lego Masters Jr. trophy. The show is made by Endemol Shine North America, Tuesday’s Child, and Plan B Entertainment, with permission from the LEGO Group.

Celebrity teammates share excitement about Lego Masters Jr., and their kids’ reactions

 

 

 

 

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Lego Masters Jr. brings a new format where kids aged 9 to 17 team up with celebrities to take on building challenges. The four-week special event starts on August 18, 2025, on Fox, and will be available to stream on Hulu the next day.

Hosted by Kelly Osbourne, the show offers a family-friendly version of the original series, with junior contestants building alongside well-known stars. Among the celebrities joining the series are Ravi V. Patel, Andy Richter, Alison Sweeney, Jordin Sparks, and Porsha Williams.

Each will be paired with two young builders, creating teams that will compete for the $50,000 grand prize and the Lego Masters Jr. trophy. The builds will be judged by returning Lego experts Amy Corbett and Boone Langston.

Patel, a longtime fan of the franchise,

“I grew up in Lego, and I’m a big fan of the show. But I had like one big box of Lego. This show made me realize that I needed way more,” he shared.

Ravi added that participating in the show was also about sharing the moment with his kids.

“I did this for my kids. I cannot wait to watch with them,” he said.

While joking that his daughter wouldn’t join the show because “she does not like attention.”

Celebrity participants reflect on their Lego journey and family support

As Lego Masters Jr. prepares to launch, several celebrity participants opened up about their experience working with young builders and how their families reacted to their involvement in the show. For many, it was an opportunity to bond with their children and revisit their own Lego memories.

Alison Sweeney mentioned that both her children were excited about her joining the show. She said her son Ben, who is now 20, had a massive Lego collection when he was younger and was particularly excited about her being on the show. Her daughter, Megan, also showed her support before filming.

“She is very competitive, so she was pumping me up beforehand saying, ‘You got this, Mom!’”

Jordin Sparks shared a similar sentiment, recalling how building Lego helped her connect with her family.

“I introduced my niece to them when she was young and, now, my son and I play and put them together,” she explained.

Although she doesn’t see herself as a Lego master, she added that putting Lego together is "calming" for her and really enjoyed "working and crafting" with her hands. Porsha Williams also credited her daughter Pilar for encouraging her participation. She mentioned that her daughter thinks it’s “the coolest thing” and would likely sign up herself in the future.

Each of the celebrities took a different approach to guiding their teams, but all highlighted how meaningful the experience was—both on a personal level and in connecting with the next generation of builders.

Stay tuned for more updates.