Ryan Seacrest Posts Extremely Rare Childhood Pic with Sister Meredith (& He’s Dressed Up as Dick Clark)

Ryan Seacrest is taking a trip down memory lane—and for a very special occasion.

In case you missed it, the TV personality and Emmy nominee, 49, teamed up with his baby sister, Meredith Seacrest Leach, to write their first children's book, The Make-Believers. And to celebrate the book's upcoming launch, Ryan took to Instagram and gave fans a rare glimpse into his childhood. He posted a slideshow and wrote, "These make-believers (circa 1989) have written a picture book…yes, that’s me and my sister, Meredith—pretending to be Dick Clark and his musical guest on Rockin’ Eve. Scroll for a sneak peek of our book!"

On the first slide, Ryan and his sister pose together in a fun recreation of the Rockin’ New Year’s Eve special. The siblings are seen standing on a homemade podium, which is set in front of some green-and-white curtains. There's also a festive sign that reads "Happy New Year," and both are in full costume, with Meredith decked out in all-white and Ryan donning a blue plaid shirt with brown pants and a white hat.

One fan commented, "Such a cool throwback! Dreams come true." Another added, "Making things happen. Now make her dreams come true and have her as a guest on Rockin’ New Year’s Eve! Can’t wait to read this with my girls."

The second and third slides include a sneak peek of the pair's debut picture book, which features illustrations by Bonnie Lui and explores the power of a child’s imagination. One page, which shows a young girl painting, reads, "Once you begin to see yourself as a make-believer, there are no limits to how you can dream." And the second, which includes images of kid astronauts, reads, "You're ready to go, go, go!"