Let's make this birthday one to remember.

44 years old (Born on June 15, 1980)

Happy Birthday, Christopher Castile! From your unforgettable days as Mark Foster on "Step by Step," you've given us countless laughs and heartwarming moments. Who could forget those classic sibling rivalries or the hilarious family adventures that made our Friday nights brighter?

Though time has passed since you graced our screens, your charm remains timeless—much like Frank Lambert's questionable parenting skills! Wherever life finds you now, we hope you're still stepping forward with humor and joy. May this birthday bring laughter reminiscent of your best sitcom scenes—and fewer awkward family dinners than a typical Foster-Lambert gathering. Cheers to another fantastic year ahead!