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The race is on to get Ashlee Simpson set up with all the things the mom-to-be will need for the imminent arrival of her baby. In fact, "she's having a last-minute baby shower tomorrow," an insider tells Life & Style. "The location is top secret. They'll send out an e-mail to all invited guests early Saturday morning. Ashlee was eyeing the Bel-Air hotel in LA -- but no one will know exactly until tomorrow morning.

"This could be the last chance for everyone to see Ashlee before she becomes a mom," the insider says. As husband Pete Wentz told Ryan Seacrest recently: "I am on call permanently right now. She's at the very end, and it could happen at any point."

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