Talk:Sam/@comment-31022739-20170802232234/@comment-32173189-20170805232734

I saw that image on his Instagram account and thought it was from a season 3 episode. In the comments for that image Chris says the family knows that Sam is a girl:

http://www.toonzone.net/forums/threads/the-loud-house-news-and-discussion-thread.5454111/page-26