LEGO Gabby’s Dollhouse will have two tie-in sets for Gabby’s Dollhouse: The Movie — 11204 Mermaid Gabby’s Aquarium Adventure and 11205 Sweet Treat Mountain & Kitty Garden.
The LEGO Group has announced two new sets for Gabby’s Dollhouse: The Movie. Releasing on August 1, 2025, 11204 Mermaid Gabby’s Aquarium Adventure will include 103 pieces and four characters for £15.99 / $22.99 / €19.99, and 11205 Sweet Treat Mountain & Kitty Garden will have 263 pieces and six characters, priced at £46.99 / $54.99 / €49.99.
Both sets are designed to tie-in with the upcoming movie, aptly titled Gabby’s Dollhouse: The Movie. These sets follow in the footsteps of four other Gabby’s Dollhouse sets released in 2023, matching the style of the previous models while tying into the new animated feature. And just like the previous sets, the two movie-tie ins fall under the 4+ banner, as the show is targeted at younger audiences.
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As the movie isn’t set to release until almost two months after the launch of the LEGO sets (releasing on September 26, 2025), the context of the sets will be up in the air for a while but given that they’re 4+ sets and primarily designed for play for young children, perfect movie accuracy isn’t a strict requirement here.
11204 Mermaid Gabby’s Aquarium Adventure is the smaller of the two offerings but still manages to pack in a respectable amount of detail for a 4+ set with 103 pieces. The core build is dotted with small, moulded sea creature elements, including starfish, clams, an octopus and more. A small slide is the main play feature, though the treasure chest in the centre is likely to capture most of the attention. Gabby gets a special variant to match what’s sure to be a unique sequence in the movie, complete with mermaid tail as the set’s name suggests.
The larger of the two sets by well over 100 pieces, 11205 Sweet Treat Mountain & Kitty Garden looks to have an impressive volume of stuff given its 263 pieces. The main structure is approximately 17cm (6in) tall and 19cm (7in) wide — and that doesn’t even include the two side builds. This is largely made possible by a healthy collection of large elements common to the 4+ world, which are here made into bright and fun colours to represent the whimsical aesthetic of Gabby’s Dollhouse. Gabby gets a human outfit in this set and is accompanied by an almost-unsettling number of cats, though the Kitty Garden had to get its name somehow.
11204 Mermaid Gabby’s Aquarium Adventure and 11205 Sweet Treat Mountain & Kitty Garden are currently listed on LEGO.com, but without an option to preorder, so anyone looking to purchase the sets will have to wait until the August 1 release date. And if you do purchase either of the sets in preparation for Gabby’s Dollhouse: The Movie, consider doing so via our affiliate links to help support the work we do at Blocks.