This is an irregular verb. It follows the conjugation pattern of the verb pedir.
PresentPresente
Me visto antes de desayunar.
I get dressed before having breakfast.
PreteritePretérito indefinido
Se vistió en cinco minutos.
He got dressed in five minutes.
ImperfectPretérito imperfecto
De niña, se vestía sola.
As a child, she got dressed by herself.