In 2007, we watched Maude and Iris Apatow make their on-screen debut in Knocked Up,before reprising their roles again in the 2012 film,This is 40.

InThis is 40,they played the brutally astute, Sadie and Charlotte, and their involvement in the film was a family affair in more ways than one.

Not only was the classic comedy directed by their dad, Judd Apatow, but playing their on-screen mum was their real-life mother, Leslie Mann.

Watch Maude and Iris Apatow steal the scene in Knocked Up. Post continues below.

Now, if you’re wondering why their names seem so familiar, let us explain.

Their dad is the Emmy Award-winning producer and director behind smash films likeSuperbad, Forgetting Sarah Marshall, BridesmaidsandThe Big Sick.Apatow was also instrumental in crafting Lena Dunham’s hit series,Girls.

Mann, on the other hand, is one of Hollywood’s most recognisable actresses, having starred in films likeThe Other Woman, The Bling Ring, How to Be SingleandRioas the voice of Linda Gunderson.

Sadie explaining where babies come from will always be a highlight of the film. Image: Universal Pictures.

Now, 13 years on fromKnocked Up, it's no surprise Maude and Iris, now 24 and 19 respectively, are rising stars in their own right.

From crafting blockbuster acting resumes to rubbing shoulders with celebrities, and owning what can only be described as aggressively cool Instagrams, this is what the sisters are up to now.

Maude Apatow.

You're going to want to remember this face, because Maude could very well be the Natalie Portman, Jennifer Lawrence, or Uma Thurman of her generation.

Currently, Maude is playing Lexi Howard in the hit HBO seriesEuphoria.

In the second series which is currently airing, Maude has noted fans will "see a lot more of my character Lexi". And based on the storyline of the first two episodes so far, we're already hooked!

maude apatow for #EUPHORIA season 2. pic.twitter.com/ybyWKKFHDu

— euphoria (@euphoriaHBO)

"It's all exciting and I think people are going to be surprised. I think people think my character is sort of this shy, sweet one, but I think she might be just as crazy as everyone else," she shared onThe Tonight Show Starring Jimmy Fallon.

Not only does she star inEuphoria, she also appeared inGirls, Pitch Perfect 2, andAssassination Nationalongside Odessa Young, Suki Waterhouse, Hari Nef and Bella Thorne.

She has also appeared in TV mini-seriesHollywoodand comedy filmThe King of Staten Islandstarring Pete Davidson, where she worked alongside her father once again.

Listen to The Spill: The best new TV shows to watch during the summer holidays. Post continues after audio.

"We have a very good working relationship - I'm lucky," she recently told PopCulture.com.

"I know my dad's seen everything I've done. My dad makes self-tapes of me sometimes. I really trust him to tell me if what I'm doing is not working and know that he has a good idea of what I'm capable of," she said.

The prolific Gen Z-er has also written widely for Zooey Deschanel's online publication Hello Giggles,and counts Lena Dunham as one of her friends.