Actress Kat Dennings is getting candid about the "very harsh" criticism she received about her physical appearance as a child actor.

Kat Dennings recalled a casting director calling her 'fat' and not 'pretty enough' when she was 12 years old: 'How can anyone say that about a little kid? This is insane.'

After 25 years of acting, Kat Dennings has seen the entertainment industry become a much more inclusive place.

In an exclusive conversation with PEOPLE, Kat Dennings looks back at the harsh critiques she received from casting directors as a child actor and recalls how she was told she was "fat" at just 12 years old.

It was pretty crazy thinking about it. I’m like, ‘How can anyone say that about a little kid? This is insane,'” Dennings recalled.

Since getting her start on the WB sitcom “Raising Dad” 24 years ago, Kat Dennings has seen it all. In a recent conversation with People, Dennings discussed casting directors who were “very cruel” to her even at a young age.