Amends the Juvenile Court Act of 1987 concerning abused, neglected, and dependent minors. Provides that when the minor is placed in the custody of a suitable relative or other person as legal custodian or guardian or placed in subsidized guardianship of a suitable relative or other person as legal guardian, custody or guardianship continues until the court otherwise directs, but not after the minor reaches the age of 18 years. Provides that when a minor is placed in the guardianship of a probation officer, committed to an agency for care or placement, or committed to the Department of Children and Family Services for care and service, custody or guardianship granted continues until the court otherwise directs, but not after the minor reaches the age of 21 years. Makes other changes. Amends the Probate Act of 1975. Provides that if the minor is a youth in care under the guardianship of the Department of Children and Family Services pursuant to the Juvenile Court Act of 1987 when the petition for the appointment of a guardian of a minor is filed, the court's determinations and findings shall be made consistent with the court review provisions of the Juvenile Court Act of 1987. Provides that any motion to modify or vacate the appointment of a guardian of a minor who was a youth in care immediately preceding the filing of a petition for the appointment of a minor guardian shall be filed and reviewed pursuant to the supplemental provisions to reinstate wardship of the Juvenile Court Act of 1987. Provides that if custody and guardianship is to be restored to a parent or guardian who was a respondent in the Juvenile Court Act of 1987 case, the court's determinations and findings shall be made consistent with the court review provisions of the Juvenile Court Act of 1987. Defines "youth in care". Effective immediately.