Rihanna told the staff at her London fashion party to bar all other guests from the VIP loos all night on Monday.
The 25-year-old singer also had the cubicles cleaned before and after her visits during the party at exclusive club DSTRKT last night.
A source told the Daily Star that they were given strict instructions that no-one should go anywhere near the toilets.
The insider said that these included the VIP loos, so even other celebrities had to use the common toilets.
Rihanna also produced a list of songs for the DJ to play and banned anyone from approaching her or touching her.
She also expected a free open bar tab for her entourage, including magnums of Cristal champagne.
Rihanna had hired extra security around her table to keep her fans away.