Alicia Longbottom is a pure-blood witch and the younger sister of Neville Longbottom.
Alicia was born a few minutes after Neville, thus making her six minutes younger. She showed signs of liking fabric, such as stringing thread around Neville's bedroom as an April Fools' Day joke when she was four. Alicia showed signs of magic, much to Augusta's relief. Prior to her years, Alicia, who had heard stories from Neville about the Houses, was worried sick about her Sorting.
Alicia was very shy, and she was immensely relieved to see her brother, and more so when she was Sorted into Gryffindor. She had bought a Puffskein prior to her arrival, and had named it Springtrap, because it kept sneaking up on her and making her jump. Springtrap kept sneaking into the boys' dormitory, then back to the girls', and later back to the boys', getting Neville miffed at his sister. She did very well in Charms and Transfiguration, and Springtrap was often her "lab rat". Alicia did average in the other classes.