She is voiced by Academy Award winner Reese Whiterspoon.
- Rosita is a selfless homemaker and mother of 25 piglets who wants to remember what it feels like to be something other than a mother and a mom. In the competition, she'll be partnered with a German pig named Gunter who instantly sees her inner diva and makes it his mission to unleash her.
Rosita once dreamed of becoming a singer as a teenager, but gave it all up to become a mother to 25 piglets. One day, when Buster Moon gives out fliers for a singing competition, she struggles between her family obligation and following her heart. She then teams up with a german pig, named Gunter, in order to join the singing competition.
Despite her struggles, Rosita is an avid dancer.
Rosita is a pink pig with slightly floppy ears, 3 pointed fingers, a pink blouse, light-blue jeans, black shoes, green eyes, blonde eyebrows and darker pink freckles.
She also wears a sparkly black costume during her and Gunter's performance of Shake It Off.
- In her black suit, she wears a headwear with horns, which resembles Maleficent's horns.