What is the name of the show with two girls with pink hair and overalls?

The show you're referring to is likely "The Amazing World of Gumball." It features characters like Gumball Watterson and his sister, Anais, but the two girls with pink hair and overalls are most likely references to other animated characters. If you meant "The Powerpuff Girls," they are also known for their colorful hair and outfits. Let me know if you need more information!