In an interview with The Guardian, Stella McCartney described the complexities of her design process, which sound painstaking, thanks to her belief that psychology and clothes are totally intertwined — one misplaced button and who knows how she’ll feel that day. “Fashion is psychology, so there’s a whole holistic sense of self that I’m thinking about when I’m designing," she said. She continued: “If I wear a slouchy jean, that will affect my posture and my whole manner. What I’m projecting will be a reflection of that waistband, a detail you might not even notice.”
That explains why McCartney only wears her own designs. She explicated:
“I’m a head to toe-er. I don’t wear anything else. I wear my own lingerie, I wear Stella For Adidas socks. Some pieces are new and some are old — these jeans I’ve had for about five years, the shoes are brand new. But it’s all my stuff.” The only non-McCartney pieces she wears are the odd vintage piece from Linda, her late mother (“but not so much these days”) and wellies by Hunter, where [husband] Willis is creative director.
So if Stella's psyche and trousers are one, would she develop a split personality if she dared to wear Marc Jacobs one day?