Chip Gaines shaves head for charity

Who are Chip & Joanna Gaines?

Fans of Chip and Joanna Gaines of HGTV's "Fixer Upper" got a treat on Wednesday night when Joanna Gaines posted about her husband's new hair -- or lack thereof.

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Chip Gaines had promised he would shave off his trademark locks for charity, and he delivered on his promise.

>> Related: Chip, Joanna Gaines announce last season of 'Fixer Upper'

With some of the boys and girls from St. Jude’s Children’s Research Hospital at his side, Chip Gaines cut his hair down to the skin.

"We are leaving Memphis changed. Kiddos of @stjude we go with your faces on our minds and your stories in our hearts," Joanna Gaines captioned a photo of her husband. "Thank you for letting us be a part of your home at Target House. We are cheering you on every step of the way."

Fans of the couple quickly chimed in to offer their praise and support.

“My heart can’t take it!” one Instagram user commented.

“This makes me all kinds of happy,” another wrote.

>> Related: Chip, Joanna Gaines team up with Target to release home-decor line

Last week, Chip Gaines urged his fans to donate to the hospital.

"It's come to my attention that most of you hate my current hairstyle. But how MUCH do you hate it? Now's the time to put your money where your mouth is," he wrote on Instagram. "Here's the deal: Next week, Jo and I are visiting the beautiful kids at Target House with St. Jude Children's Research Hospital in Memphis. No family ever pays @StJude for treatment, travel or food -- so basically, we want to bring them a giant check from YOU to help cover costs -- lets come together to do something big to bless these kiddos."