Jason LaVeris / FilmMagic

Several hundred fans waited in line for hours on Wednesday to meet sisters Khloe and Kourtney Kardashian, who were unveiling a first look their family's fashion collaboration with Bebe at the Beverly Center in Los Angeles.

The Kardashians were previewing looks from their Holiday 2010 and Resort 2011 Kardashians by Bebe line.

Kourtney was wearing a little black dress from her line, and her own stacked-sequins jacket in gold. She told StyleList about her commitment to being a designer: "I am such a perfectionist. We all are. We all collaborate on every aspect of our line. We don't do anything half-assed. I'll take a break to go take a shower and come back to 30 e-mails in my in-box from Kim and Khloe about the line."

Khloe told us: "Today we had a creative meeting, and Kim couldn't be there. She was in New York. The minute the meeting was over, we called Kim and discussed with her everything that we spoke about in our meeting. We are all hands-on."

Khloe, wearing her own line head-to-toe in black, said her favorite item was her black velvet shine leggings. "I live in these, they are so comfortable and they hold it all in," she gushed. "I love them, everyone needs a pair!"

The Kardashians for Bebe line varies in price from jewelry for around $30, to jackets just under $300. It can be found in stores or on Bebe.com.

And check out our complete archive of Kardashian style news here.