Thumbs Up American Stickers include 77 awesome stickers to use in your iMessage conversations. Thumbs up sign with US flag. US fans give the thumbs up with Thumbs Up American Stickers. Thumbs Up American Stickers are a great way to support your country and show your love for it. Thumbs Up American Stickers are a must-have. Thumbs Up American Stickers are perfect for games, celebrations, sports tournaments and olympics. Check out some screenshots.