Kirsten is the older sister to Maddie, she's a more stuck up, vain and haughty girl than her sister (though in a more subdued way compared to her sister) one of the most popular girls in her school. She runs the food truck, though she takes a more backseat approach and tends to be on her phone a lot of the time, though when things get bad, she can work out a plan to get through tough situations, even more than her younger sister