The 26-year-old singer, who is preparing to embark on the US leg of her world tour next month, has given organizers and staff a long list of dos and dont`s, reported the Daily Star.
The `Fireworks` hitmaker has asked for a refrigerator with a glass door for her backstage area, which must be "draped in cream or soft pink", two cream-coloured "egg chairs", vases of white and purple hydrangeas as well as pink and white roses and peonies. Carnations are strictly banned, according to her rider.
The `California Gurl` hitmaker never allows her chauffeurs to have a conversation with any client, guest or fan, during her gigs. Staring to the backseat through the rear view mirror is also prohibited.
The 23-point "principle driver policy" also states, "Do not ask for autographs or pictures, and especially not while driving."