When does Star vs. the Forces of Evil return?

Star vs. the Forces of Evil is an American animated magical girl television series. It is the first Disney XD series created by a woman, and the third overall for Disney Television Animation. The series follows the adventures of Star Butterfly, the young turbulent heir to the royal throne in the dimension of Mewni, who is sent to Earth to mellow her reckless behavior. As the series progresses, new, more threatening antagonists appear in the show, including the mysterious monster Toffee and former Queen Eclipsa Butterfly's half-Mewman, half-monster daughter Meteora Butterfly.