Barbra Streisand simply cannot be expected to interact with the common public ... according to her. During a recent visit to a Beverly Hills florist, Babs went into diva mode because--*GASP*--there were other people inside of the store! Mike Walker of the National Enquirer has the story:

Phoning the store, La Streisand warned she was on her way in and demanded: (1) get all customers OUT immediately so there's no gawking; (2) NO SMOKING...even outside in the back alley where workers construct flower arrangements; and (3) drape a tarp over the front window so passersby can't stare - or snap snapshots! When the haughty thrush returned moments later, customers were being bum-rushed out, all back-alley boys had snuffed their butts, the window was draped as demanded - and a florist flunky was waiting to park the Diva-mobile! (Source)

I'd hardly call this "diva" material. The same thing happens to me when I use a public toilet. (1) people clear out--because their eyes tear up, (2) everyone is asked to put out their smokes--for fear of an explosion, and (3) a tarp is draped over the restroom--to minimize contamination of the surrounding area (and to protect the children). So am I a diva? Of course not. I just have a really active colon.