1.First,Olivia Cookeis currently 30 years old while playing Alicent Hightower inHouse of the Dragon.

Her character has three children: Aegon, Aemond, and Helaena.

In real life, Tom Glynn-Carey is 25, Ewan Mitchell is 26, and Phia Saban is 25.

Scenes from "House of the Dragon" showing four characters: Alicent Hightower, Daemon Targaryen, Aemond Targaryen, and Helaena Targaryen in medieval attire

2.Similarly, Emma D’Arcy is 32 years old while playing Queen Rhaenyra Targaryen inHouse of the Dragon.

Their character has five children, including Jacaerys.

In real life, Harry Collett is 20 years old.

Emma D'Arcy and Ewan Mitchell in character on "House of the Dragon," standing in a dimly lit room with medieval decor and candlelight in the background

3.Nicola Coughlanwas 31 years old when she began starring as Clare Devlin inDerry Girls.

4.Jeffrey Dean Morganwas born in 1966 and began playing John Winchester inSupernaturalwhen he was 39 years old.

Angela Bassett, who notably played her daughter Tina Turner, is only one year younger than Jenifer.

Sister Michael speaks on the phone at her desk while Clare stands in a school classroom, wearing a school uniform

7.Jennifer Robertson is 52 years old and started playing Jocelyn Schitt inSchitt’s Creekwhen she was 44.

Meanwhile, Tim Rozon is 48 years old and played her son Mutt when he was 39.

9.K Callan was 83 years old when she starred as Great Nana Thrombey inKnives Out.

Jeffrey Dean Morgan, Jared Padalecki, and Jensen Ackles in scenes from "Supernatural."

Meanwhile, Christopher Plummer, who played her son Harlan Thrombey, was 90 when the movie premiered.

10.Cher was born in 1946 and starred as Ruby inMamma Mia!

Here We Go Againwhen she was 72.

Nicole Kidman stares intensely inside a wooden cabin. Alexander Skarsgård, bearded and wearing medieval attire, is at the helm of a boat during an expedition

Kate Mara appeared as her daughter, Alma Jr., and was 22 when the film premiered.

Cuba Gooding Jr. starred as his son Tre, and he is only seven years younger than Laurence.

13.Eliza Butterworth was 22 years old when she started playing Lady Aelswith inThe Last Kingdom.

Top: Jenifer Lewis wearing a necklace and stylish blouse, looking intently off-camera. Bottom: Angela Bassett standing at a microphone, dressed in a blouse and belt

Meanwhile, Millie Brady, who plays her daughter, Lady Aethelflaed, is the exact same age.

Meanwhile, Cory Monteith was only four years younger when he began playing Finn Hudson, Will’s student.

Upper image: Jane Seymour is laughing at a table with another person. Lower image: Victor Webster is outdoors, wearing a plaid shirt and carrying a backpack

Top image: Estelle Getty as Sophia Petrillo wearing an apron in 'The Golden Girls'. Bottom image: Bea Arthur as Dorothy Zbornak looking thoughtful in 'The Golden Girls'

Christopher Plummer in two film scenes: one wearing a fur-trimmed coat and hat, the other in a vest, sitting in a cozy library

Cher and Meryl Streep in scenes from "Mamma Mia! Here We Go Again." Cher is wearing sunglasses and a stylish suit, while Meryl Streep is dressed in casual overalls

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Laurence Fishburne and Cuba Gooding Jr. in a two-scene collage from a TV or movie production. Fishburne wears a striped shirt and tie, Gooding Jr. a plain white T-shirt

Top image: Woman in medieval clothing stands among crowd. Bottom image: Woman in medieval clothing stands indoors. Scenes are from TV show "The Witcher"

Ian Harding and Lucy Hale appear in scenes from the TV show "Pretty Little Liars." Ian wears a casual sweater, while Lucy is dressed in a striped top

Top image: A surprised woman labeled "25." Bottom image: A confident woman with a shaved head being styled, labeled "28."

Top: Lionel Jeffries as Grandpa Potts in a vintage military uniform inside a wooden hut. Bottom: Dick Van Dyke as Caractacus Potts in period attire at a festive event

Matthew Morrison in a button-up shirt and tie. Cory Monteith wearing a striped shirt with a backpack in front of lockers