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After a whirlwind trip to Greece, Paris and London with her family and then baby daddy Kanye West, Kim Kardashian returned to Los Angeles on Thursday afternoon. But the mom-to-be isn't sitting down and taking a breather -- she'll be back on the road for an appearance at Sears in Houston, Texas on Saturday ... does she EVER sleep?

In other news, Kanye tweeted "June Eighteen" earlier this morning, and we're not sure if that's the release date for his new album or Kim's due date, but either way we're excited to find out!

And speaking of due dates, there were reports that the couple aren't moving in to their new Bel Air mansion this summer due to delays with renovations, but we can report exclusively that those rumors are 100% false. We wanted to check on progress at the Kimye mansion so we sent a photographer up in a helicopter the other day and there is absolutely no construction going on at all. What's up with that?