Heidi Klum and Joan Collins.Photo:Amy Sussman/Getty ; Karwai Tang/WireImageHeidi KlumandJoan Collinsare settling an age-old debate — do blondes have more fun than brunettes?The supermodel, 50, and theDynastyactress, 90, pondered the question together ina videoposted on Klum’s Instagram grid on Saturday.“I know I say that blondes have more fun, but maybe brunettes have more fun?” theGermany’s Next Top Modelhost asked the camera in the clip, before panning to reveal Collins seated next to her.Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories.“Well, Heidi, you look like you always have fun, but I’ve been having fun for a lot longer than you have,” theDynastystar answered with a laugh.“I think we have a lot of fun. I think we both have a lot of fun,” Collins continued.“We all have a lot of fun — it doesn’t matter what hair color,” Klum concluded at the end of the video, and Collins agreed. So, the debate lives on!Per Klum’s caption, the unlikely duo was on the set of her showGNTM, the modeling competition reality show she’s hosted since its first season in 2006.Joan Collins and Heidi Klum.Heidi Klum / Instagram"Blond or brunette! Who has more fun?@joancollinsdbe❤️ GNTM," she wrote. Collins will likely appear on the upcoming season of the show as a guest judge.No matter who has more fun, one thing is for sure — both women can serve a look.In the video, Klum wore what appeared to be a magenta top, adorned with a statement jewelry piece for added pop. Collins looked glamorous in a silvery white suit jacket embellished with paillettes.Both women finished their looks with bold lip colors and wore their hair down, proudly showing off their bangs.

Heidi Klum and Joan Collins.Photo:Amy Sussman/Getty ; Karwai Tang/WireImage

Heidi Klum and Joan Collins .

Amy Sussman/Getty ; Karwai Tang/WireImage

Heidi KlumandJoan Collinsare settling an age-old debate — do blondes have more fun than brunettes?The supermodel, 50, and theDynastyactress, 90, pondered the question together ina videoposted on Klum’s Instagram grid on Saturday.“I know I say that blondes have more fun, but maybe brunettes have more fun?” theGermany’s Next Top Modelhost asked the camera in the clip, before panning to reveal Collins seated next to her.Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories.“Well, Heidi, you look like you always have fun, but I’ve been having fun for a lot longer than you have,” theDynastystar answered with a laugh.“I think we have a lot of fun. I think we both have a lot of fun,” Collins continued.“We all have a lot of fun — it doesn’t matter what hair color,” Klum concluded at the end of the video, and Collins agreed. So, the debate lives on!Per Klum’s caption, the unlikely duo was on the set of her showGNTM, the modeling competition reality show she’s hosted since its first season in 2006.Joan Collins and Heidi Klum.Heidi Klum / Instagram"Blond or brunette! Who has more fun?@joancollinsdbe❤️ GNTM," she wrote. Collins will likely appear on the upcoming season of the show as a guest judge.No matter who has more fun, one thing is for sure — both women can serve a look.In the video, Klum wore what appeared to be a magenta top, adorned with a statement jewelry piece for added pop. Collins looked glamorous in a silvery white suit jacket embellished with paillettes.Both women finished their looks with bold lip colors and wore their hair down, proudly showing off their bangs.

Heidi KlumandJoan Collinsare settling an age-old debate — do blondes have more fun than brunettes?

The supermodel, 50, and theDynastyactress, 90, pondered the question together ina videoposted on Klum’s Instagram grid on Saturday.

“I know I say that blondes have more fun, but maybe brunettes have more fun?” theGermany’s Next Top Modelhost asked the camera in the clip, before panning to reveal Collins seated next to her.

Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories.

“Well, Heidi, you look like you always have fun, but I’ve been having fun for a lot longer than you have,” theDynastystar answered with a laugh.

“I think we have a lot of fun. I think we both have a lot of fun,” Collins continued.

“We all have a lot of fun — it doesn’t matter what hair color,” Klum concluded at the end of the video, and Collins agreed. So, the debate lives on!

Per Klum’s caption, the unlikely duo was on the set of her showGNTM, the modeling competition reality show she’s hosted since its first season in 2006.

Joan Collins and Heidi Klum.Heidi Klum / Instagram

Heidi Klum and Joan Collins .

Heidi Klum / Instagram

“Blond or brunette! Who has more fun?@joancollinsdbe❤️ GNTM,” she wrote. Collins will likely appear on the upcoming season of the show as a guest judge.

No matter who has more fun, one thing is for sure — both women can serve a look.

In the video, Klum wore what appeared to be a magenta top, adorned with a statement jewelry piece for added pop. Collins looked glamorous in a silvery white suit jacket embellished with paillettes.

Both women finished their looks with bold lip colors and wore their hair down, proudly showing off their bangs.

source: people.com