Snapchat parent's stock plummets after Kylie Jenner tweet

"sooo does anyone else not open Snapchat anymore? Or is it just me... ugh this is so sad," Jenner tweeted.

She later followed up with "still love you tho snap ... my first love," but the damage may already have been done.

Snap Inc.'s shares fell by over six percent in Thursday trading, a loss of about $1.3 billion in market capitalization.

Jenner has huge followings on various social media platforms, including Twitter and Instagram.

She gave birth to a daughter this month, and her Instagram post announcing the pregnancy quickly became one of the most liked posts of all time on the social media platform.