The 'New York' singer, who is known for her theatrical stage sets, said that she is keen to make her show as visually exciting as possible, despite having a tightly allocated slot to perform in.
She told I Like Music: "This year the thing I'm most excited about is playing on the Pyramid Stage at Glastonbury! I've never played to that many people before, I'm so excited! And I'm hoping to meet Stevie Wonder there too.
"I'll probably be having some healthy, mild competition with other people! So I'm going to try and do my absolute best to have an impact.
"It's kinda different to when I do my headline shows. I always have a massive set and production and things, so it'll be a little bit more difficult, you have to get on and off in your allocated slot. I'm trying to think of imaginative ways to make it both visually and sonically exciting."