Library of Congress website. One of the first things you'll probably notice is that there are no teacups in this print. When I enlarged the image to fill my 21-inch computer screen, however, it appears that maybe the lady standing at back (the hostess?) is presiding over a tea service.
At the front of the table, I notice what appears to be a pedestal bowl of fruit, and I also note that the ladies seem to have shallow bowls as well as plates. The lush greenery hanging overhead makes me think this is a warm weather scene, so perhaps that's why some of the ladies have fans.
And while I love to admire those pretty dresses with all that lushly draping fabric, I cannot imagine enjoying any sort of teatime wearing that garb! The dog (I don't know dog breeds, sorry) seems to be resting politely, and I wonder if that dog really was that well-behaved or whether this was a fantasy picture. Oh, and the last thing I noticed was that the tablecloth appears to have either a ruffle or fringe, I can't quite tell which. It's fun to find things like this on the Library of Congress website, images I almost certainly would never have seen if they weren't online!