Transcript for 'GMA' celebrates nurse captured in viral photo
We are right around the corner moments away from the surprise. This is Katy's twin sister she made this go viral with that Facebook post and now she's my accomplice. We are going to go surprise Katy right now. Are you ready? This is it so we're here. We're looking for a caty Nixon. This is caty Nixon? Yes. Hi. I'm will reeve from "Good morning America." You are live on television. That is going out. I think you know this person, your sister lawyer. We hear about all the amazing things you do, how hard you work. We wanted to make your Monday and have a whole morning of surprises in store for you. I'll need you to come with me. It seems like we might need some tissues but we'll get that taken care of. Oh, no. No. Let's go to the piece that tells caty's story. Caty Nixon is a labor and delivery nurse where she gives it her all every single day. When she walks into the department. The air gets lighter because of what she brings with her every day. Her patients have always known how amazing she is. She always has a smile on her she is so sweet. Her patients absolutely love Reporter: But just last month the rest of the world caught a rare glimpse of just how much city cares after her twin sister Laura posted this photo that went viral on Facebook writing, caty just wrapped up her fourth shift in a row. That's around 53 plus hours in four days. She usually doesn't get a chance to eat lunch. She often forgets how to take care of herself. She's the one that's there early. She's the nurse that stays late. She is the Thursday that helps her co-workers. Reporter: There is nothing city won't do to put a smile on someone's face including a full baby shark dance with one of her patients. Are you ready? Caty is just somebody you want to know. Somebody you want to be friends with. Somebody that makes a difference in your life and she's made a difference in mine and I know she makes a difference in our patients. That is caty's amazing story. Right now let's go to ginger. Oh, thank you so much, Don't go anywhere. That big surprise is coming at you next when we come back. A lovely day
This transcript has been automatically generated and may not be 100% accurate.