While the guys sported ’50s looks, the ladies wore party dresses with festive accessories – Moore donned a sombrero and good friend Minka Kelly dressed in a clown bow-tie.
“Celebrating love w the greatest friends and family last night. Feeling incredibly grateful today,” Moore, 29, wrote.
The singer-songwriter-actress-designer posted a photo of her marriage certificate last week with the caption, “The best 5 years ,” and last month shared a sweet snapshot from 2009 for Throwback Thursday.
“On tour with @theryanadams (and The Cardinals) in Oz back in ’09. Photo by the great @nealcasal #TBT,” she wrote.
The couple became engaged in 2009 after dating off-and-on for about a year.
FLASHBACK: The One Thing Mandy Moore Doesnt Want to Do with Her Husband