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4. Erica Packer

Erica Georgia Packer is a model and singer. She is the wife of James Packer, the eighth richest man in Australia. She married her husband in a lavish ceremony that spurged over $15 million. The couple has three children and has announced their separation. As for her career, Erica has seen ups and downs but has failed to make any big impact. Her album Through My Eyes that came out in 2007 was mostly unsuccessful because of shortcomings in the promotion. Erica is among the most beautiful wives of world famous billionaires