The incredibly sweet gesture comes after the HBO star shared a photo announcing that she had completed the second round of her chemotherapy. Posing in a hoodie and a drawn-on mustache, Louis-Dreyfus also captioned the image with "Roar" lyrics.
"Chemo #2: finito. We are NOT f**king around here," she declared, before quoting Perry. "I’ve got the eye of the tiger, the Fighter, dancing through the fire cuz I am a champion and your’re going to hear me ROAR.' Thanks to @mrtonyhale & @timothycsimons & @katyperry for their hilarious and loving inspiration."