This list is neither exhaustive nor definitive, but if you're looking for a place to shop in Paris on a Sunday, it's a good place to start.
Paris Shopping Centers and Districts Open on Sunday
Carrousel du Louvre:
The Carrousel du Louvre is a favorite Paris shopping center among locals and visitors alike: open 7 days a week, the Carrousel du Louvre features dozens of shops, a gourmet food court with 14 restaurants, and an elegant and airy setting. The bottom part of the famous glass Pyramide du Louvre (Louvre Pyramid) is visible from one wing of the shopping center. In addition, the Carrousel du Louvre includes an extensive exhibition space where major annual events like the Paris Photo exhibit are held.
Most of the shops situated on Paris' famed Avenue des Champs Elysees are open on Sundays, including Louis Vuitton (at #101), Zara (#44), Drugstore Publicis (also #44), fashion concept store Le 66 Champs-Elysees (#66), in addition to the Virgin Megastore, rival book, music and electronics seller Fnac, Quicksilver, Marionnaud, Sephora, Gap, or the Disney Store. As can be expected, however, crowds are thick on Sundays on the "Champs".
La Defense Shopping Center (Les Quatre Temps)
The La Défense Quatre Temps shopping center is a monstrous complex just outside the Paris city limits within the ultra-metropolitan business complex known as La Defense houses 230 shops, 30 restaurants, a giant multiplex cinema showing many English-language films.
Open: Most shops are open from 11:00 am to 7:00 pm on Sunday.
Location: La Defense, exit "Les Quatre Temps Centre Commercial", Metro/RER La Defense
Read more about the La Defense Quatre Temps shopping center
In the hypertrendy Marais neighborhood, many of the area's most-coveted fashion, accessories and home design shops remain open on Sunday. The Rue des Francs Bourgeois (access: Metro Rambuteau or St Paul)is brimming with open shops, such as MAC, L'Artisan Parfumeur, Zadig et Voltaire, French chain Comptoir des Cotonniers, or artisan jewelry sellers and young designers' boutiques. Take a spin of the stores and then have a peek at the collections on Paris history at the Musee Carnavalet on the same street.
For home design in the Marais, head to Le Printemps du Design inside the Centre Georges Pompidou (Metro Rambuteau), or to Marais boutiques like DOM (21 rue Sainte Croix de la Bretonnerie, Metro St Paul or Hotel de Ville) for amusing decorative objects (admittedly bordering on kitchy).
Bercy Village-Cours St Emilion
This shopping center, a new addition to Paris' relatively quiet 12th arrondissement, is situated right across from the Bercy Park and in close reach of the up-and-coming National Library (Bibliotheque Nationale) district. Shops open here on Sunday include designer Agnès B, home and garden store Truffaut, Nature & Découvertes, Sephora, Résonances or Andaska. There's also a large number of restaurants and a multiplex cinema offering many films in English.
Location: 28, rue François Truffaut, Metro Cours St-Emilion
In the hilly heights of the iconic Montmartre district, several concept boutiques are open on the Rue d'Orsel (Metro Pigalle or Abbesses), which has in recent years become a new fashion hotspot. Base One (at 47 Rue d'Orsel) is a concept shop offering men's and women's fashions from France and Europe. Gaspard de la Butte (at #57) is a boutique owned by French designer Catherine Malaure.
Nearby, at 16 rue la Vieuville, you'll find another concept store open on Sundays, Spree, offering clothing, jewelry and home furnishings, both new and vintage.