Barbie & Chelsea: The Lost Birthday is the 38th Barbie movie. It was released on April 16, 2021, on Netflix (USA). It is the first movie to have Chelsea in a starring role. The movie follows Chelsea and her family as they go on an adventure cruise for Chelsea's 7th birthday. When the cruise crosses the International Date Line, Chelsea thinks she has lost her birthday, so she goes on an adventure on a jungle island to save her birthday.
The movie is 60 minutes long and is available on Netflix (USA), Cartoonito (Italy), Pop (UK), 9Go! (Australia), Neox Kids (Spain), SuperRTL (Germany), Carousel (Russia), and iQIYI (China), and more. The theme song of the movie is "Make a New Day," and the soundtrack Barbie & Chelsea: The Lost Birthday and More!was released on April 16, 2021.