"This Halloween was one hell of a block party," Jessica said on Instagram after celebrating the spooky holiday. "Happy Halloween from our LEGO family to yours."
There is no word yet on how the famous trio plans to celebrate the big occasion, but with Timberlake finishing up his tour in support of Man of the Woods, maybe it will be a destination party?
Until we find out, check out our galley below to see how much Silas as grown up!
Happy birthday, Silas. Enjoy your birthday week!