A Painted or American Lady sighting!

I think one of the Monarchs molted over night, its fake antenna things are now just barely visible. Another Monarch flew by, but didn't stop. Either a Painted Lady or American Lady was hanging around the garden today. I have a hard time telling which is which. It was hanging out near the appropriate host plants and also nectaring from the zinnias in the garden. I got a few pictures of it, but couldn't get too close, it wouldn't let me. I'm guessing it was a male based on its behavior and also that I didn't find any eggs afterward. Biggest Monarch caterpillar is now about 6mm long, got some pictures of it. Found another egg on a tropical milkweed.