Jennifer Garner Wishes 'Alias' Co-Star Michael Vartan a Happy 50th Birthday!

Jennifer Garner is throwing it back to her Alias days to wish her former co-star Michael Vartan a happy birthday on a milestone year!

Michael is celebrating his 50th birthday today (November 27) and Jen wrote a sweet note for him on Instagram.

“Can you believe this baby face is 50?! Happy birthday, #MichaelVartan,” Jennifer captioned a black-and-white promo shot from the show. In hashtag format she added, “Always an Alias girl” and “Sydney and Vaughn forever.”

Jennifer and Michael dated for a year between 2003 and 2004 and have remained close friends ever since Alias went off the air in 2006.