Not long after sharing their struggles with infertility, Chrissy Teigen and John Legend are now finally expecting their first child, but that's not the only landmark the adorable couple is going through, as the past Chrissy Teigen birthday saw the Sports Illustrated model reach the big 3-0 - and her superstar husband is all love and support for her!

Chrissy Teigen's birthday was last Monday, November 30, and her multiple award-winning husband did what every other woman in the planet dreams he'll do to them: he serenaded his love as she turned 30!

According to Indian Express, the Grammy and Oscar-winning musician sang to his wife on Chrissy Teigen's birthday, as they celebrated with friends and family that the model and "Lip Sync Battle" co-host was turning three decades on Earth, and of course John sang "Happy Birthday" to her in the sweetest of ways.

MTV reports that Legend, real name John Roger Stephens, was the one who organized the entire Chrissy Teigen birthday bash, which was celebrated last Saturday night at the Comedy Cellar in New York, inviting her closest family members and friends for an epic surprise party, where the beautiful and fun-loving model showed off her adorable pregnant belly.

Dave Chappelle was also around for the celebrations, making a surprise on-stage performance for Teigen's big night, as she looked quite choked up with everything husband John had made happen.

According to E! Online, there were a lot of planned celebrations for Chrissy Teigen's birthday, as her superstar hubby also took her to see the "Nutcracker" ballet at Lincoln Center on Sunday and dinner for two in the hip Chelsea spot Del Posto, where they looked as stunning and as madly in love as ever - without a doubt, they're one of the sweetest couples in Hollywood!

Watch a clip of Legend singing to his wife during Chrissy Teigen's birthday party!