25 Cutest longtime celebrity couples, now and then (Photos)

Slideshow posted in Photos | Tuesday, February 04, 2014

18 of 51: Sarah Michelle Gellar of 'Buffy The Vampire Slayer' fame and Freddie Prinze Jr. appear in a selfie the actress posted on her Twitter page on March 12, 2014. She said: 'Now only because this is a special occasion....To all my fans, for your loyalty and support, I thank you. 200,000!!!'

Gellar and Prinze Jr. met on the set of the 1997 thriller movie 'I Know What You Did Last Summer.' They began dating after filming was complete and later co-starred as Daphne and Fred in the film adaptation of 'Scooby-Doo,' which was released in June 2002. They wed the following September. The pair reprised their roles in the 2004 sequel, 'Scooby-Doo 2: Monsters Unleashed.'

Gellar and Prinze Jr. welcomed their first child, Charlotte, in September 2009. Their second child, son Rocky, was born in September 2012. ( Photo / pic.twitter.com/YwxFl9IDaf / twitter.com/RealSMG/status/443869275313295360)