She earned a degree from University of Wisconsin–Madison in 1918 and taught English for year prior to relocating to Rockford, Illinois where she worked at the Rockford Register Gazette. Fitz-Gibbon later moved to Chicago, where she took a position at Marshall Field's. She moved to New York City in 1926 to work on the Macy's account, where she penned the tagline "It's smart to be thrifty."
In 1918, she obtained her degree from University of Wisconsin–Madison and taught English for a year before relocating. She worked at the Rockford Register Gazette in Illinois and later moved to Chicago to work at Marshall Field's. In 1926, she relocated to New York City to work on Macy's account, where she penned the tagline "It's smart to be thrifty."