Vintage clothing is what shabby chic it all about.
However you can style this look with your clothes as well: in fact try to combine a pair of jeans with a delicate shirt or with flowers printing like roses in the design which is perfect. During winter i suggest you cozy and warm sweaters or even soft tight feminine shrugs if you still want to be chic during these cold days!
Vintage floral patterns with pastel colours, cotton ticking patterns, or linen in earth tone are all typical of shabby chic style.
Accessorize: flowers. Flower bracelets and rings, even flowers in your hair!