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This year's We Day California, an annual event celebrating youth empowerment, was full of A-list stars — including Charlize Theron, Demi Lovato, Seth Rogen, Zooey Deschanel, Selena Gomez and Henry Winkler.
But none brought quite the same level of cuteness to the scene as the 9-year-old "Room" star ... and his adorable (and nameless!) new pup.
Tremblay, who took time to pose for a few shots with his fluffy new pal, presented Winkler at the celebration.
On Thursday, the young actor shared a photo of the new furry family member on Twitter, alongside a caption asking for name suggestions.
"Please help me name my puppy! #itsagirl," the young actor tweeted.
The "Room" star also uploaded a collage of images from the We Day event to his Instagram account — and from the looks of it, the lucky pooch certainly had a star-studded good time.