NPS Strap Dress Mini NPS Stripe is the classic #101 t-shirt designed as an knee lenght dress with thin shoulder straps and narrow stripes. The NPS Slip Dress is a redesign of the classic NPS #101 t-shirt designed by Jørgen Nørgaard in 1967. The dress was first designed back in the 90’s and is still knitted and sown in Denmark from 100% bci cotton. The Slip Dress is one-size.