Neil Patrick Harris, expert baby dresser. (Matt Sayles/AP)

Neil Patrick Harris — star of “How I Met Your Mother” and this Sunday’s Tony Awards host — has no qualms about dressing up his infant daughter like the late Mexican artist Frida Kahlo.

During an appearance last night on “The Late Show With David Letterman,” Harris explained that he and partner David Burtka are essentially creating an Anne Geddes-style calendar featuring pictures of their twin babies, Gideon and Harper. So each month has a theme: babies drinking green beer for St. Patrick’s Day, babies as bunnies for Easter and infants in Cinco de Mayo-style garb for May (hence, Kahlo).

The children are adorable, even if turning poor little Harper into a uni-browed Kahlo is a little disturbing.

Letterman spent the rest of the interview grilling Harris about how egg donation and artificial insemination work — so it’s both entertaining and scientifically educational! You can watch the interview via video of the full episode; Harris’s portion begins at around the 20-minute mark.