Christmas time is here.

The 2017 Rockefeller Center Christmas tree, a 75-foot, 80-year-old Norway spruce from State College, Pennsylvania, was unveiled on Wednesday with a little help from celebrity performers Gwen Stefani, Brett Eldridge, Leslie Odom Jr., Pentatonix and more.

Kick off the start of the holiday season with photos from the ceremony.

The Rockettes

Credit: Getty Images / Theo Wargo

The Rockettes perform during the 85th Rockefeller Center Christmas Tree Lighting Ceremony on Wednesday, Nov. 29, 2017.

Mayor Bill de Blasio and 'Today' hosts

Credit: Getty Images / Theo Wargo

Hoda Kotb, Savannah Guthrie, Mayor Bill de Blasio and Al Roker push the tree-lighting button onstage during the ceremony on Wednesday, Nov. 29, 2017.

Credit: Getty Images / Theo Wargo

The Rockettes perform during the Rockefeller Center Christmas Tree Lighting Ceremony on Nov. 29, 2017.

Credit: Corey Sipkin

Rockefeller Center Christmas tree was lit for the first time this season on Wednesday, Nov. 29, 2017.

Harry Connick Jr.

Credit: Getty Images / Theo Wargo

Harry Connick Jr. performs during the tree lighting ceremony on Wednesday, Nov. 29, 2017.

Credit: Corey Sipkin

The Rockefeller Center Christmas tree was lit for the first time this season on Wednesday, Nov. 29, 2017.

Leslie Odom Jr.

Credit: Getty Images / Theo Wargo

Leslie Odom Jr. performs during the tree lighting ceremony on Wednesday, Nov. 29, 2017.

Brett Eldredge

Credit: Getty Images / Theo Wargo

Brett Eldredge performs at the tree lighting ceremony on Wednesday, Nov. 29, 2017.

The Rock Center tree

Credit: Corey Sipkin

Rockefeller Center and its famous Christmas tree are all lit up on Wednesday, Nov. 29, 2017.

Spectators watch from windows

Credit: Corey Sipkin

People watch from an upper floor of a building in Rockefeller Plaza as they wait to see the Christmas tree lighting on Wednesday, Nov. 29, 2017.

Credit: Corey Sipkin

More than 50,000 multicolored, LED lights cover the 75-foot-tall Rockefeller Center Christmas tree that was lit on Wednesday, Nov. 29, 2017.

The crowd

Credit: Corey Sipkin

People wait to see the tree lighting on Wednesday, Nov. 29, 2017.

Credit: Corey Sipkin

A star tops the Rockefeller Center Christmas tree on Wednesday, Nov. 29, 2017.

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