Beyonce is joining the ranks of the world's many singer/songwriters turned fashion designers (a roster that includes Beth Ditto and Kim Gordon among others). And she's doing it with the help of her fashion designer/manager mom, Tina Knowles. The line in question is called Sasha Fierce for Deréon - the latter being Tina's seasoned fashion operation, and the former Beyonce's altar ego and title of her last LP - and will be marketed at the under-18 demographic. The collection "includes a full range of sportswear, outerwear, handbags, footwear, eyewear, lingerie and jewelry," says Women's Wear Daily and will retail alongside Deréon's teen line, which is stocked at stores like Macy's and Dilliards. And, according to Tina it'll reflect the "edgier and trendier" vibe of Beyonce's alter-ego's "daring and outgoing attitude.”