Star Butterfly , also known as Star the Underestimated , is the main and titular protagonist of Star vs. In seasons 1 - 2 , she lives with her Earth hosts, the Diaz family. In season 3 , she returns home to Mewni. As of season 4 , she lives in the Monster Temple following the destruction of Butterfly Castle. She was also the 37th Queen of Mewni for four days  before giving the kingdom to Eclipsa Butterfly.
Star Vs. The Forces of Evil FanFiction Archive | FanFiction
The animated series Star vs. It follows the adventures of Star Butterfly, heir to the royal throne of the dimension of Mewni, who is sent to Earth so she can complete her education and learn to be a worthy princess; and Marco Diaz, a human teenager who becomes her best friend, as they live their daily lives, go on adventures in other dimensions, and, in the first season, try to prevent the evil Ludo and his minions from stealing Star's magic wand. On her 14th birthday, she is given the family heirloom - the royal magic wand - but after she causes a big accident, she is sent to the Earth dimension as a foreign exchange student. She then lives with the Diaz family. Nefcy had originally designed Star as a fourth-grader obsessed with Sailor Moon and wanting to become a magical girl despite not having any powers. The design was initially just her with heart cheeks and the devil horns came later.
She is first featured in tapestry in " Into the Wand ", and her history is expanded upon in " Butterfly Trap " and Star vs. Festivia is a young woman with fair cream skin, long blue sometimes bluish-purple hair, blue eyes, and purple four-pointed star-shaped marks on her cheeks. In tapestry, she is depicted wearing a long green tunic with purple sash, and a headband with curved horns and grapes hanging down from the right horn.