Justin Timberlake Wishes Jessica Biel Happy Birthday: 'You Make Me Smile 'Til It Hurts'

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Justin Timberlake and Jessica Biel attend the 2013 Time 100 Gala at Frederick P. Rose Hall, Jazz at Lincoln Center on April 23, 2013 in New York City.

Justin Timberlake took to Instagram to wish his wife Jessica Biel a happy birthday Tuesday, laying on the flattery in for a pretty cute post. 

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"Happy Bday to the sweetest, most GORGEOUS, goofiest, most BAD-ASS chick I know. You make me smile 'til it hurts. I love you like crazy! --Your Huz," he wrote with an image of a polaroid photo of the two expecting parents. 

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Timberlake and the newly 33-year-old Biel have been married since October, 2012. The couple announced in January they're pregnant with their first child