September 03, 2009 08:14 PM

Jeff Vespa/WireImage

While most bloggers don’t lead the most glamorous lives, creators creators, Hillary Kerr and Katherine Power celebrated the launch of their style guide, Who What Wear: Celebrity and Runway Style for Real Life with trend-setting celebs like Jessica Alba, Lauren Conrad, and Emma Roberts at Sunset Towers in Hollywood. While some celebs got their hair and makeup done by Maybelline and Garnier, Conrad, clad in BCBGeneration, took time to flip through the new book. Alba, on the other hand, twirled in her Prada dress to tunes spun by Samantha Ronson. But, Alba did stop to chat with PEOPLE about why she was there. “I check out the site every other day,” she said. “They cut all the B-S out. I can go there to find out what the latest trend is.” Those trends, according to Power, include, “winter shorts and leather leggings,” for the fall season. “I’ll be wearing my leather leggings the most,” she said. You can pick up your copy of the book at, $19. –Susan Yara

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