https://www.livemint.com/Technology/pXOkbuqTwhOElUg99fYX7M/WhatsApp-new-feature-iPhone-Private-reply-sticker-photo-vide.html
WhatsApp new features: Reply privately in groups, add stickers to photos and videos preview...
Jan 7, 2019 - To try out these new features, make sure you have updated to version 2.19.10 of WhatsApp for iPhone
add stickers to photos