Nathalie Rykiel, daughter and heiress of Sonia Rykiel, launched the Sonia by Sonia Rykiel line in 1999. Fashioned with signature accents from the main line, including inside-out stitching, the sister brand has a youthful and contemporary appeal. Having opened her first boutique in 1968, French designer Sonia Rykiel's main collection is famed for 'Poor Boy jumpers' and fitted jumpers. This collection of Sonia by Sonia Rykiel jumpsuits include lively playsuits, colour-blocked rompers, striped overalls and long pant styles to suit all occasions. Quality materials such as wool, cotton and silk add a rich and enduring appeal.