Devon Aoki is a proud new mother after giving birth to a baby boy, RadarOnline.com can confirm.

The 2 Fast 2 Furious beauty and her fiancé James Bailey took to Twitter to spread the good news.

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"Celebrating the birth of our son and Devon and my anniversary yesterday is more than I could ever ask for," Bailey wrote on the social networking site. "Our family keeps growing,"

The pair got engaged in 2010 and announced their pregnancy in July 2011.  They've not yet set a wedding date.

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