Pretty! I think accessories may be the way to go - to do this kind of modest dress without becoming frumpy. I wish this were in fashion, rather than similar skater dresses that are 4 inches above the knee.
Grouping framed paintings on a shelf interspersed with books and knick-knacks will provide a casual, informal feel for living rooms and bedrooms. Add to the relaxed feel by resting pictures side by side or slightly overlapping.