She carries three pairs of sunglasses (black, gold and brown) in her purse and a pair of nude-colored or gold Christian Louboutin shoes, in case she has to elevate her outfit at a moment's notice.
Many "Beyonce sightings" happen while she's shopping, but the superstar said she loves the pastime too much to give it up because of the risk of an unflattering photo.
"I enjoy shopping but I hate trying on clothes," she told The Associated Press in a recent interview.
One of her latest purchases: an 18-karat gold ring from Lorraine Schwartz's monkey collection. Beyonce's is a hear-no-evil monkey made of 5 carats' worth of yellow diamonds surrounded by white ones.
"I hear so many crazy things about myself that I'd rather not," she joked.
Beyonce, who recalls wearing her first Armani suit at 14, said diamonds often are a sign of a woman's strength these days.
"Now women can buy their own diamonds," she said.
The Emporio Armani Diamonds fragrance will be in stores next month.