Jessica Biel rang in her 38th year with a pajama-themed birthday party and a serenade from her husband, singer Justin Timberlake.
In a series of photos Biel shared to Instagram, Timberlake is seen presenting her with a frosted cake.
MORE: Justin Timberlake pens touching note to wife Jessica Biel on her birthdayThe actress explained in her caption that although she made Timberlake "PROMISE" not to sing "Happy Birthday," "He improvised ... [and] I'm still laughing."
"Thank you, you wonderful human, for really listening to me, and for throwing my kinda party," she wrote. "And thank YOU ALL for the birthday wishes. Feeling the love."
Biel and Timberlake, 39, have been married since 2012 and have one child together, 4-year-old son Silas. The "Sinner" star shared in an Instagram story that her "boys" served her breakfast in the formation of a smiley face to kick off her big day, and Timberlake marked the occasion with an Instagram tribute of his own.
"Happy Birthday to the LOVE of my life... A new adventure every day and a treasure to me. I can’t wait to share many more of these with you," he wrote. "Thanks for putting up with me when I smell funky after a round of golf or, when I smell funky in general. You are the mostest of the mostest, my love! I adore you."