Ellen DeGeneres and Portia de Rossi celebrate 13 years of marriage: 'I'm the luckiest girl in the world'

Portia de Rossi and Ellen DeGeneres attends the 77th Annual Golden Globe Awards
Photo credit Frazer Harrison/Getty Images

Congratulations, Ellen DeGeneres and Portia de Rossi!

On Monday, the two love birds celebrated 13 years of marriage after tying the knot in August 2008.

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"Happy anniversary, Portia," DeGeneres, 63, wrote to Instagram under a photo of the two of them lounging outside. "I'm the luckiest girl in the world because I get to share my life with you."

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De Rossi took to her own social media account to gush about her wife. The "Arrested Development" star, 48, posted a gallery of photos throughout the marriage, including a throwback picture of the couple in the early days of their relationship.

"13 years ago I married the love of my life," she wrot