Sarah Michelle Gellar fans joke her 'genes didn't even try' as she shares photos of son Rocky, 14, who looks just like dad Freddie Prinze Jr

Sarah Michelle Gellar shared some sweet photos of her teenage son Rocky as fans couldn't believe how much he resembled dad Freddie Prinze Jr. 

The 49-year-old actress took to her Instagram to post snaps from the 14-year-old's go kart race over the weekend.

In the photos, the youngster had an uncanny likeness to his actor dad, 50, as the comment section went wild over their similar appearance as one fan joked: 'Sarah's genes didn't even try [crying and rolling while laughing emojis].'

'Ma'am you were just an incubator. That is alllll Freddie [laughing emoji],' another said while a different user wrote: 'Not the mini Freddie omg [laughing emoji].'

In one of the snaps, Gellar could be seen proudly posing with the teenager before his race.

There was also a sweet selfie of Gellar and Prinze cuddling while enjoying their son's big sports day.

The power couple, who have been married for 24 years, also have a 17-year-old daughter named Charlotte together.

Last month, Gellar shared more snaps of Rocky in celebration of his 14th birthday as he once again showed a stunning resemblance to his famous father.

The teenager, who is already the same height as his mother, posed beside her with an arm wrapped around her shoulders for the snap.

'And then, there were two,' Gellar captioned the photo which she shared on Sunday after daughter Charlotte's festivities.

'Three years and one day later @rockyprinze came racing into our lives. I should have known from your speedy delivery, the excitement you would bring,' she wrote. 'You have no idea how lucky I feel to watch you chase your dream. You inspire not just me, but everyone around you. Happy Birthday Rocky.'

Earlier that month, Gellar commemorated her 24 years of marriage to Prinze Jr in a very sweet way as she took fans on a walk down memory lane.

She took to Instagram to share several throwback snaps from the beginning of her relationship with the fellow actor.

The pair first met on the set of the 1997 horror film I Know What You Did Last Summer, and Gellar included several snaps seemingly from that era.

The actress captioned the gallery: '@realfreddieprinze can you imagine telling these kids where they would be 24 years later (well tech 26… but 24 married) #happyanniversary.'

The two stars were friends first and then dated for two years before going on to tie the knot in 2002. 

Prinze Jr previously recalled the early days of their relationship at the premiere of the reboot of I Know What You Did Last Summer last year.

In an interview with Access Hollywood, he said: 'We were friends for a good couple of years before any sort of date happened.

'We were supposed to go out with a group of people, and everybody else bailed… so it was just the two of us,' Prinze Jr said on The Howard Stern Show.

They dated for a few years before Freddie popped the question in 2001.

The couple has never revealed the details of the proposal with Gellar previously saying: 'I didn't want a big public proposal. I wanted something private.'

After getting married, the pair also worked together on a number of projects including the live-action Scooby-Doo movie, which was released in 2002, as well as the 2004 sequel, Scooby-Doo: Monsters Unleashed.

The pair also both voice acted in the 2006 animated film Happily N'Ever After.

A few years later, they expanded their family, welcoming Charlotte, their first child, in 2009 and then Rocky in 2012.