Looks like somebody's spiked her Slurpee with grown-up juice!!
Of course, the 21-year-old Spring Breakers starlet is of legal age and definitely allowed to put anything in her mouth that might make her happy — we're looking at you, Niall Horan — but she was JUST in rehab!!!
So, we're flummoxed she's flaunting adult beverages in front of her loving fans!
Selenita captioned the pic:
"Extra whip cream please! Dessert before dinner. Duh."
Duh indeed, gurl! We just hope U know what you're doing!!
[Image via Instagram.]