The former Ghost Whisperer star, who plays a call girl in her new Lifetime series, confessed that she would not have been comfortable baring it all for the cameras, according to People.
"I wouldn't have done nudity, no," Hewitt said during a conference call. "That's not something that I feel particularly comfortable with."
She went on to say that she thinks it's better to show less to viewers.
"I also think that it's sexier not to show everything," she added. "I feel like imaginations can do way more."
Hewitt recently revealed that she would like to date The Voice coach Adam Levine.
She has since apologised for the admission, saying she is embarrassed for the attention that she is getting.
The Client List premieres tonight (April 8) at 10pm on Lifetime.