News of Kim Kardashian's second pregnancy [1] came out earlier this week, and at Tuesday's Hype Energy Drinks launch in Nashville, the star told us whether her daughter, North, understands that she'll be a big sister. "She knows that Mommy has a baby in her belly, but she thinks everyone has a baby in their belly," Kim said, adding, "I think she thinks I'm saying 'belly button.' I don't think she really understands it. Maybe when my belly gets bigger and she actually sees it, she'll understand better."

It's been a busy start to the week for Kim, who attended the CFDA Awards [2] with her husband, Kanye West [3], on Monday. The stylish star is proving that she doesn't let a baby bump stand in the way of sexy outfits [4], as she wore a sheer number for the CFDA Awards and a body-hugging dress in Nashville. To celebrate her second pregnancy, check out her cutest moments with North [5], then relive Kim and Kanye's road to baby number two [6]!

— Additional reporting by Nick Maslow