The holiday rush is on. Streets in downtown Chicago were packed with holiday festivities on Sunday as crowds gathered on Michigan Avenue for the annual Magnificent Mile Lights Festival and Parade.

Some along the parade route said they were excited for another year of Mickey Mouse and Minnie Mouse flipping the switch to light up the Mag Mile.

The day of festive fun culminates in what organizers say is the largest evening parade in the U.S., marking the beginning of the holiday season in Chicago.

Chicago's holiday season has unofficially arrived, with the city's Christmas tree being lit Friday as a weekend full of holiday events begins.

People flooded downtown Chicago Saturday night for the annual Magnificent Mile Lights Festival Parade. For 15 years, former Texas schoolteacher Kayla Morris put every dollar she could save into a home for her growing family.

Saturday night marked a fun night of holiday festivities in downtown Chicago from the Wintrust Magnificent Mile Lights Festival to the fireworks show on the Chicago River.