What heightened the series' fame has a lot to do with the ever-so-talented cast.

Even years after the sitcom’s end, their recognizability has stayed consistent.

In April 2023, Cuoco posted a selfie (are we still calling it an usie?)

(L-R) Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Mayim Bialik and Melissa Rauch pose at their 2019 handprint ceremony

onInstagramwith her beau, Tom Pelphrey, with a messy updo and a bare face.

“Not a good thing when you are on a television series,” Cuoco added.

Mayim Bialik has a creative way to stay ageless

Neuroscientist?

Side-by-side of Kaley Cuoco with makeup and without makeup

“after Alex Trebek’s death.

With all those studio lights, Bialik’s face is heavy with industry makeup.

However, off-camera, the actor lets her gorgeous face breathe, which she often shares on social media.

Side-by-side of Mayim Bialik with makeup and without makeup

“Do I purposely build snowmen extra diminutive in stature, so I can smugly tower over them?

You know it!”

Rauch wrote in the caption.

Side-by-side of Melissa Rauch with makeup and without makeup

Christine Baranski’s no-makeup look is turn-of-the-century accurate

Christine Baranski needs no introduction.

The show, a period piece, demands actors to look period-accurate, which includes makeup.

One glance at Lapkus’sInstagramwill give you a glimpse into her makeup staples.

Side-by-side of Christina Baranski with makeup and with minimal makeup

Her bright blue eyes are usually complemented by a black, winged eyeliner.

Her usual lipstick color tends to feature coral, pink hues.

However, Lapkus is not afraid to flaunt her unadorned features.

Side-by-side of Lauren Lapkus with makeup and without makeup

In a November 2022 post onInstagram, Lapkus sported a no-makeup look as she sat in casual attire.

“Cozy night at home,” she captioned the post.

The comedian played MUA YouTuber Harmony, who is “living with possession.”

She goes through her regimen as an evil spirit gains control of her body.