Old picture shows up when signing up to sites and/or services

Copper Contributor

A very old profile picture of mine (pre-outlook) shows up when I sign up with my mail to new services/sites. 
I don't know if it also shows up when sending mails, but as I use my mail for professional purposes as well, I do not want the old picture to show. 
I've checked my settings for both gmail (as I've linked it there) and microsoft and can't find traces of the picture anywhere, yet it still shows up.
Please help.

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