Thirty-year-old teenagers are nothing new on TV.

How old is too old to play a teenager on TV?

Is it as soon as you hit 20? Or is there a bit of give and take, so long as wrinkles haven’t replaced pimples?

After all, Ben McKenzie was 25 when he started playing brooding teenager Ryan on The OC, and my little pre-teen heart didn’t care how old he was. Even if he was a little bit more… mature than your average 17 year old.

And remember Dionne from Clueless? Actress Stacey Dash was 28 when she played  Cher's bestie. TWENTY EIGHT. No awkward braces here, Stacey was certainly not a high school student, but she passed for one.

The Hollywood Foreign Press (the gang who hosts the Golden Globe awards) is trying to pass a bill to help greying celebs keep getting gigs as teenagers. Ageism be damned!

The bill seeks to prohibit sites such as IMDB and casting websites from listing ages, so actors can be cast based on merit, not the number of candles they blow out.

Spurring the movement is Gabrielle Carteris, who played 17-year-old Andrea in the original 90210. The actress was 29 when she landed the role, and says there is no way she would have got called in for an audition if she had let on that she was a little out of touch with the young kids. So she lied.

And now Hollywood is getting in on the joke. This week on The Binge, we took a look at Younger, the TV show that is mirroring life.

Younger follows 40-year-old Liza who is looking to re-enter the workforce after putting her career on hiatus to raise her kid. But how do you get hired when you've been out of action for a decade or two? You pretend to be a 26 year old.

The show takes on the culture gap that exists between the generations, in a way that is mostly entertaining, but sometimes a bit cringey. She's in her 40s, she's not an alien.

Using Bing instead of Google? Wake up to yourself Liza! It's 2016. All the twenty-somethings are shaking our heads.

We say give it a watch, if only to revel in the glory that is age diversity in Hollywood. And for the makeover. You can't go past a good makeover.

But the best part? Actress Sutton Foster who plays Liza is actually in her 40s. WHAT IS HER SECRET?

Listen to the full episode of The Binge below, and subscribe in iTunes.