Blac Chyna is officially about her business, and she proved this during her recent birthday party when she allegedly made her guests download her $1.99 app for entry into the event.

According to Radar Online, the official invitation to the event, held at Hard Rock Cafe in Hollywood, California, read, "Please download the CHYmoji app before you arrive and show the attendant the icon on your phone when you check-in to the event."

One attendee wasn't too happy with the mandatory instructions, saying, "It was absolutely ridiculous. People were being turned away because they did not have her app downloaded to their phones and not everyone has iPhones! One guest's phone was dead, and they almost didn't let him in!"

Blac Chyna's CHYmoji app debuted at the top of the Apple Store app charts, and features a slew of shady emojis including one which seems to show the model slapping her future sister-in-law Kylie Jenner.

Watch Blac Chyna's journey to becoming a Kardashian in the BET Breaks video, above.