It can be argued that Justin Timberlake and Jessica Biel are still the hottest couple in showbiz, but one thing for sure is that the pair are definitely the cutest, which was recently proven when the 34-year-old singer wished his pregnant wife a happy birthday.

Justin Timberlake
Timberlake wished his "BAD-ASS" wife a happy 33rd birthday online

On Tuesday (March 3rd) Timberlake wished Biel a happy 33rd birthday in a very tender Instagram message. As well as uploading an adorable picture of the soon-to-be parents, he also wrote, "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."

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The birthday girl's other love of her life, a dog named Tina, also celebrated with Biel as well. The 'Total Recall' actress posted a snap on WhoSay of their beloved pet giving her a "Birthday smooch," adding, "Thanks everyone for all the good wishes!"

Biel's online birthday celebrations comes only a month after the celebrity duo took to Instagram to announce they are expecting their first child together. Timberlake confirmed the pregnancy news by posting a picture of him kissing Biel's growing baby bump. "Thank you EVERYONE for the Bday wishes!" he wrote. "This year, I'm getting the GREATEST GIFT EVER. CAN'T WAIT. #BoyOrGirl #YouNeverKnow #WeDontEvenKnow #WeAreTakingBets."

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And the newborn baby will be brought up in a household full of love! Back in 2013 when the pair were newlyweds, Timberlake couldn't help but gush about Biel during an appearance on The Ellen DeGeneres Show, he said, "Every once in a while I can catch a glimpse of her when she doesn't see me looking, and I have this moment where I'm like, 'If you never make a good decision...if you only make bad decisions for the rest of your life. You made one really good decision.'"

The two stars will undoubtedly be excellent parents.