The problem with Twitter is that it's so easy for things like this — a real-life exchange between Stefano Gabbana and his Twitter friend — to happen (translation from Italian courtesy of Humor Chic):
Fabio Viscovo - I LOVE Stella McCartney!
Stefano Gabbana - who ??????
Fabio Viscovo - ahahaha! You don’t like Stella McCartney?!
Stefano Gabbana - Who ????? The daughter of the singer ?????
Fabio Viscovo - Yeeees! Stella McCartney, the designer !!!!!
Fabio Viscovo - Stefanoooooooo, please !!!!! You don’t know Stella’s a stylist ?????
Stefano Gabbana - What’s she known for?? What’s her specialty??
Stefano Gabbana - What sort of style does she do? What’s so special about it??
Fabio Viscovo - She makes a lot of minimalist sequined dresses... ... .. they’re really feminine. They’re perfect for a nude look!
Fabio Viscovo - Come on! You’ve just got to have seen them! And although she’s really famous she’s still an upcoming designer!
Stefano Gabbana - Yeah, she’s upcoming after 15 years doing nothing!! Hahahaha
Stefano Gabbana - Aaaaaaa ...... I see you appreciate nonentities!! Bravo!
Stefano Gabbana Has No Idea Who Stella McCartney Is [Daily Front Row]