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LEGO Masters Jr. is a real U.S. FOX reality-competition series—not an upcoming show. It premiered on August 18, 2025, and its first season contains four episodes. Kelly Osbourne hosts, while Amy Corbett and Boone Langston serve as judges and Brickmasters. Depending on current rights and location, viewers may find the season through FOX, Tubi, or digital purchase services.
Where to watch LEGO Masters Jr. online
Streaming rights can change, so check the episode-level listing before subscribing or purchasing. The availability information below is primarily for viewers in the United States.
| Option | Access type | What to know |
|---|---|---|
| FOX | Official network episode page | The premiere is listed on FOX, but playback may require an eligible pay-TV provider login or a current FOX streaming sign-up. |
| Hulu | Subscription streaming | The official LEGO page advertised next-day Hulu availability after the original FOX broadcasts. Confirm that the complete season is still in the catalog. |
| Tubi | Free with ads | JustWatch’s U.S. listing reported Tubi availability in a check dated June 26, 2026. Verify the live listing, since free-streaming rights can change. |
| Amazon Video | Digital purchase | JustWatch listed Amazon Video as a purchase option. Prices and episode or season availability vary by country and account; do not assume prices shown in a regional listing apply in the U.S. |
| Apple TV | Series listing | Apple TV lists the 2025, four-episode series, but a listing does not necessarily mean the episodes are included with a subscription. |
Best first check: viewers who want a no-cost option should look for a current Tubi listing, while viewers who already have FOX access can start with the official FOX episode page. Families considering a digital purchase should compare the total season cost with any available free or existing-subscription option.
When did LEGO Masters Jr. premiere?
The U.S. series premiered on Monday, August 18, 2025, on FOX. Its advertised original run continued through September 8, 2025, with a four-episode first season.
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The official LEGO show page describes the program as premiering on FOX with episodes available on Hulu the following day. That describes the original broadcast and streaming arrangement; it should not be treated as a guarantee that Hulu still carries the season.
The premiere, “Disney Train Ride,” is listed by FOX as a 43-minute episode dated August 18, 2025.
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Is LEGO Masters Jr. a real show?
Yes. LEGO Masters Jr. is a junior-focused U.S. spinoff of the LEGO Masters reality-competition format. It is structured as a short, special-event-style competition rather than a conventional long season: five junior LEGO duos compete across four episodes, with each duo working alongside a celebrity partner.
No second-season renewal status is established by the sources cited here, so the four-episode first season is the complete season to look for at present.
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Host and cast
Host
Kelly Osbourne hosts LEGO Masters Jr.. She is the presenter, not one of the show’s judges or Brickmasters.
Judges and Brickmasters
- Amy Corbett
- Boone Langston
Corbett and Langston evaluate the builds and provide the building expertise central to the competition.
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Celebrity teammates
The adult celebrity partners identified in the official program materials are:
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- Ravi Patel
- Jordin Sparks
- Alison Sweeney
- Porsha Williams
These celebrities team up with the junior builders; they are not the junior contestants themselves. The available official listings do not provide a complete, clearly organized contestant-by-contestant roster, so names beyond the identified adult lineup should not be treated as confirmed.
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What is the show about?
Five junior LEGO-building duos face themed construction challenges, with each team joined by a celebrity teammate. The builders must turn loose LEGO bricks into creative, competition-ready models while meeting the requirements of each challenge.
The winning team competes for a $50,000 grand prize, a trophy, and the LEGO Masters Jr. title, according to FOX’s program sheet.
Platform listings describe the junior builders as ages 9–17, although that age range should be understood as attributed listing information rather than a universally verified casting rule. Apple TV lists the series as TV-PG and 9+. Parents may wish to review the rating and any platform-specific advisories before watching with younger children.
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Episode guide
The four-episode season is listed as follows:
- “Disney Train Ride”
- “Celebrity Stunt Doubles”
- “Harry Potter”
- “Ninjago”
The titles indicate the central themes without revealing the competition’s outcome. Check the current platform listing for exact runtimes, availability, and any regional differences.
Quick Recap
What to check before watching
- Confirm your country: the availability information above is U.S.-focused, and international rights may differ.
- Check whether access is included: a service can list the series while requiring a separate purchase or provider authentication.
- Distinguish free from ad-free: Tubi availability, when offered, means free viewing with advertising rather than unrestricted ad-free playback.
- Check the full season: platforms may carry some episodes, a complete season, or only a discoverability listing.
- Recheck before paying: subscription catalogs, digital prices, and streaming rights can change without the series title disappearing from search results.
Sources
- Official LEGO show page
- FOX episode page
- FOX program sheet
- Apple TV listing
- JustWatch U.S. availability guide
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
