Meet the adorable children of The Big Bang Theory cast

Kaley Cuoco starred as the typical girl-next-door who grows into the Penny Hofstadter we know and love today. While Penny famously did an about turn on her decision to remain child-free in the show's final season, Kaley had a clearer path to motherhood off screen. 

Kaley welcomed daughter Matilda Carmine Richie Pelphrey in 2023 with fiancé Tom Pelphrey. Now, they're adding another member to the family, with a second baby girl arriving soon.

Leonard was the heart of The Big Bang Theory crew, taking fans on a rollercoaster of emotions during his turbulent love life and undying crush on the girl next door. 

In real life, Johnny Galecki has welcomed two children. He shares his oldest child, son Avery Orbison, who was born in 2019 with ex-girlfriend Alaina Meyer. 

Johnny welcomed his second child in 2024. He shares daughter Oona Evelena Galecki with his wife Morgan, and both have kept details of their private life minimal. 

During his cover interview for Architectural Digest in March 2024, Johnny revealed he and Morgan had quietly tied the knot. Morgan was reportedly pregnant at the time of the shoot and their daughter arrived "soon after". 

Howard Wolowitz might have struggled with finding love but the same can't be said for the actor under all those dickies, Simon Helberg.

Simon married filmmaker Jocelyn Towne in 2007, the same year the hit US sitcom first broadcast. They welcomed their first child, daughter Adeline in May 2012.

Simon and Jocelyn become parents for the second time in 2014, when they welcomed son Wilder Towne Helberg in April.

It seems two is the perfect number for Simon on and off screen, as his Big Bang counterpart was also a father of two: welcoming daughter Halley and son Neil Michael. 

Amy Farrah Fowler may have been a late arrival to the cast but she became a fan-favourite as the neuroscientist who won the heart of physics star Sheldon Cooper.

Off-screen, Mayim Bialik married Michael Stone in 2003 and welcomed son Miles Roosevelt Bialik Stone. 

Mayim Bialik welcomed her second son on 15 August 2008. Five years later, in 2013, Mayim finalised her divorce from her husband of 10 years.

Mayim has been dating writer, producer and futurist Jonathan Cohen for more than a decade. The pair co-host mental health podcast Mayim Bialik's Breakdown. 

Bernadette Rostenkowski was the high-pitched, waitress-turned-pharmaceuticals star who joined the group as Penny's friend and Howard's love interest.

On screen, Bernadette welcomed two children with Howard. In real life, Melissa Rauch is a mother of two, giving birth to daughter Sadie in 2017. 

Three years after daughter Sadie arrived, Melissa's son Brooks was born in 2020. She welcomed both of her children with husband Winston Beigel.

Winston and Melissa tied the knot in 2007, the same year as The Big Bang Theory's premiere, and have been living happily ever after since.