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Brooke Mueller went shopping yesterday with her pup, but she needs a bit more help from Paris in the pooch department.

Beverly Hills ladies who lunch rule #1 - The dog has to fit under your arm. You have to be able to hold the dog and pour through racks at Barney's without missing a beat.

Beverly Hills ladies who lunch rule #2 - Bring Paris with you when you shop; she increases your chic factor :)