Le Chien ("The Dog" in French) is a high fashion clothing company in Grand Theft Auto IV and Grand Theft Auto V. It is featured on www.peepthatshit.com, listed under the "High Fashion" link in the "Shopping" section. Their slogan is "Make up le paris".
In GTA V, the brand seems to have returned, but is now also producing high-end fragrances. The brand can be seen on various advertisements around the city. In addition, a large billboard can be found in Los Santos on Eclipse Blvd. that says "Smell Like A Bitch", referencing the meaning of the word chien in French. The logo, as well as the name of the brand itself, are likely a parody of Chanel, a popular fragrance brand.