Kate McKinnon — American Actress born on January 06, 1984,

Kate McKinnon Berthold, commonly known as Kate McKinnon, is an American actress, voice actress, and comedian. She is best known for her sketch comedy work as a cast member on Saturday Night Live and The Big Gay Sketch Show... (wikipedia)

For an impression, I just find that I can do a lot of the people I love without much research, because I've already watched hours and hours of them on video and it seeped into my brain while I wasn't thinking about it.
I started watching 'SNL' when I was thirteen or so; those were the Molly Shannon/Ana Gasteyer/Cheri Oteri years.
I was very serene, and I still am, until I start talking in another voice, then suddenly I have a lot of volume and I'm frantic. But I didn't want to be one of those people who's always talking in accents in real life, so I started doing sketch comedy.
If you asked me to seriously kiss someone on a screen, I would be very uncomfortable. But I will lick any part of your face.
I only come up with things when I am talking to myself, which I do constantly. The sidewalk and the subway are the best places for this. I speak at full volume and then laugh at myself if I like what I just said.