KNOXVILLE, Tenn. (WVLT) -- Knox County Mayor Tim Burchett is now the father of 8-year-old Mary Isabel Kimball Burchett. She's the daughter of his wife, Kelly.
Burchett filed the paperwork to become a legal guardian this week, according to staff from Burchett's office. Knox County Chancellor John Weaver and attorney Christopher Heagerty made the adoption official.
To celebrate, the new father and daughter had a dinner at Chick-fil-A. Isabel wore her Christmas dress. She picked out Burchett's necktie -- the one he wore on his wedding day, Burchett's staff confirmed.
Isabel's biological father died a few years ago. According to Burchett's staff, he was a U.S. Navy master chief.