Running a close second to the Hollywood baby boom is the must-have-dog trend. Some celebrities, like Britney Spears and Tori Spelling, do the dog-baby thing in tandem. But others -- such as Jessica Biel, Rihanna, Gisele BÃ¼ndchen and Paris Hilton -- are sticking with just their pup companions for now. Come meet some stars and their pampered pooches here!
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The Hills star Audrina Patridge holds Lauren Conrad's dog Chloe,
STILL TO COME: Blake Lively, Ethan Hawke & more!