When a celebrity adopts a baby from an impoverished country.

Much like a trophy wife or husband, this baby is usually a symbol of status. And like the other spouse in the relationship, the purpose of the parent is to provide money and luxurious goods.
Me: Dude, Brangelina have a plethora of Trophy Babies!

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Jack: Who is that cute black kid Madonna is holding?
Jill: OHEMGEE, THAT'S HER NEW TROPHY BABY!
by Yumlicious_RKFO April 24, 2010
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