If you don't just take private photos but share them, then it's possible your messaging client of choice has copies of those photos stored as well.
Whether it's Apple's i Message, Snapchat, Facebook Messenger, Whats App, We Chat, Line, or any of the half-dozen or so Google apps that do messaging, if you want your pictures gone, you'll have to get rid of them there as well.
Hackers briefly took control of Gomez’s Instagram account on Aug. more Selena Gomez is back in control of her Instagram account after someone posted nude photos of her ex-boyfriend, Justin Bieber.
USA Today reports the pictures were posted briefly Monday to Gomez’s 125 million followers, the most of any Instagram user.
The only truly deleted photo is the one never shared or taken. If you want a backup of your photos — all your photos — but don't want them online, you can backup your photos to your Mac or Windows PC using i Tunes or any camera capture app.