Operation Happy Children event hosts 200 pre-school students at Macy's Walnut Room

CHICAGO (WLS) -- The 12th annual Operation Happy Children event was held Wednesday morning at Macy's in Chicago.

About 200 pre-school students gathered for a breakfast around a big tree at Macy's famed Walnut Room. The kids also visited with Santa.

Macy's and the Make-a-Wish Foundation hosted the event, which kicks off Macy's "Believe" letter-writing campaign.

For every letter written to Santa and dropped off at a Macy's "Believe" mailbox, $1 is donated to the Make-a-Wish foundation.