Mademoiselle Fifi was the chat du John Moisant who flew the English Channel. She flew with him (and his mechanic), being the first cat to cross the Channel by plane, I understand.
He later died in a crash near New Orleans. From what I can tell, Mademoiselle Fifi is dressed up for the funeral. I haven’t been able to confirm this but it looks that way, anyway. What a lovely kitty kat!