United Kingdom, March 8 -- Sarah Michelle Gellar feels "lucky" to be married to Freddie Prinze Jr.

The 47-year-old actress and the Hollywood star - who turned 49 on Saturday (08.03.25) - tied the knot back in 2002, and Sarah has taken to social media to pay a glowing birthday tribute to her husband.

Alongside some throwback photographs, Sarah - who has Charlotte Grace, 15, and Rocky James, 12, with Freddie - wrote on Instagram: "Happy Birthday @realfreddieprinze The world got very lucky the day you were born, but no one more so than me (and our children) I'm so glad I get to grow old with you.and that you will always have a head start!! (sic)"

Despite this, Sarah previously admitted that a successful marriage requires hard work.

The a...