In some cases, older actors playing teens is part of the project’s schtick.

2.OnPretty Little Liars, 31-year-oldBianca Lawsonplayed16-year-old Maya St. Germain.

His character, Paxton Hall-Yoshida, was in high school.

Clare in her school uniform eating a sandwich

5.InWet Hot American Summer, 31-year-old Paul Ruddplayed17-year-old Andy.

6.Likewise, inWet Hot American Summer, 30-year-old Amy Poehlerplayed17-year-old Susie.

7.Jessica Marie Garcia was 31 when shebeganplaying teenage Jasmine Flores onOn My Block.

Nicola in a leather jacket holding a drink

9.OnThe Dropout, 36-year-old Amanda SeyfriedplayedElizabeth Holmes, who was 18 at the start of the show.

10.OnPEN15, 34-year-old series co-creator Maya Erskineplayed13-year-old Maya Ishii-Peters.

11.Likewise, onPEN15, Maya’s fellow 34-year-old co-creator Anna Konkleplayed13-year-old Anna Kone.

Nicola Coughlan as Penelope Featherington in Bridgerton, wearing a regal Empire-waist gown

Nicola in a floral dress with a shoulder bag standing in a restaurant

Bianca as Maya with curly hair, tank top, and necklace, indoors near color swatches

Bianca in sequined top at an event

Scott with '70s hair and a collared shirt

Smiling Matt in a casual shirt outdoors with blurred background

Paxton in a hooded jacket and henley shirt outside

Darren in suit posing in front of a golden backdrop

Andy in denim jacket over sweater, standing indoors, concerned expression

Paul Rudd wearing a striped dress shirt at a public event

Susie in striped top speaks into microphone on stage

Smiling Amy in a patterned blouse and coat with a shoulder bag

Jasmine walking with a phone, smiling, wearing a multicolored top. Outdoor setting

Jessica on red carpet wearing a graphic print dress with a long braid, posing for cameras

Moaning Myrtle from Harry Potter, wearing Hogwarts robes and glasses

Shirley in embroidered top sits on chair

Elizabeth in a collared shirt looks surprised in a home setting

Amanda in a glittering strapless gown with a trophy, posing at a gala event

Maya in a scene with a brightly colored tanktop, necklace, and hair in a bob

Maya Erskine poses in a patterned dress at an event

Anna in athletic wear with braces and messy bun

Anna in printed dress seated on stage with microphone

Audrey Hepburn as Holly Golightly in "Breakfast at Tiffany's," wearing a dress and gloves with pearls

Audrey Hepburn in a sleeveless striped dress with an elegant updo hairstyle

Rizzo with short, curly hair and a dark top

Stockard in a satin blazer with Mickey Mouse motifs, smiling at the camera