As the Republican presidential candidates faced off against each other in the second GOP debate, Hillary Clinton stopped by "The Tonight Show Starring Jimmy Fallon" and showed off her lighter side. Clinton's appearance on "The Tonight Show" was her first late-night appearance since she declared her presidential candidacy in April, according to The Los Angeles Times.

Clinton and Fallon opened Wednesday night's show with a sketch where the "Saturday Night Live" alum impersonated Donald Trump. In the sketch, Fallon, as Trump, called Clinton and gave her some pointers about her campaign.

"Congratulations, you're speaking to Donald Trump," Fallon said.

Clinton took the opportunity to attack Trump's controversial words on women issues and her stance on gender equality.

"I've spent my entire career fighting for women's rights," Clinton explained. "I'll push for equal pay in the workplace, I'll protect women's health and reproductive rights, and I'll make quality, affordable childcare a reality for families. I'm really curious, Donald, what is your stance on women's issues?"

"Look, I know a lot of women...and they all have issues," Fallon's Trump replied to Clinton.

The Democratic presidential candidate also sat down with Fallon for an interview in which she discussed her use of a personal email account during her tenure as Secretary of State.

"Nothing that was sent at the time, or received, was secret. This was all retroactive. It's a little hard to explain but sometimes different government agencies argue about what should or shouldn't be what's called classified," Clinton said.

Check out her sketch and interview with Fallon below!