Photo: Mandy Moore/Instagram

The viral challenge, originated from comedianAtsuko Okatsuka, involves squatting down to the beat of Beyoncé’s hit 2013 song “Partition” while gazing at the camera.
As she promoted the upcoming release of her new single, “In Real Life,” Moore put her own twist on the challenge, dropping down to pick up the many items that her 12-month-old son Gus throws on the floor.
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Moore also posted a sweet Instagram video featuring highlights of her son from the past year. She included many moments such as Gus enjoying bath time, visiting her on the set ofThis Is Us, playing outside on a swing set and Gus sitting at the piano with Goldsmith.
She captioned the post, “Gus- Being your mom is a gift beyond my comprehension, a love so fierce and mighty that I know I will never touch the depths of. Happy Birthday to our ever joyful and curious boy!!! You turned on all the lights, Goosey.#thisisgus🎂”
Mandy Moore Instagram

After Kimmel, 54, showed a photo of Moore and Goldsmith holding Gus as he stared down his birthday cake, the mom of one explained that things didn’t quite go as she expected.
“I was so excited to get him in front of a cake and the quintessential first birthday, smashing the cake everywhere,” she said. “Couldn’t have cared less about the cake.”
Joking that her son was “not a sugar guy,” the singer continued, “He was curious about it, but much more interested in the cheese board that Mom had for the adults.”
source: people.com