This is the 'Kylie Jenner effect' in full force.
The 20 year old sent a tweet on Wednesday to her 24.5 million followers which read,"sooo does anyone else not open Snapchat anymore? Or is it just me... ugh this is so sad."
Almost instantly Wall Street reacted and Snapchat's stock market value has now plummeted $1.3 billion.
Kylie's tweet follows a Snapchat redesign which has been less than popular with users. A digital petition to remove the new update has over 1.2 million signatures so far.
Possibly realising the implications of her actions Kylie followed her initial tweet with a second one, "still love you tho snap, my first love".
still love you tho snap ... my first love— Kylie Jenner (@KylieJenner) February 21, 2018
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Cover image credit: Instagram @kyliejenner