'Fixer Upper's Chip Gaines will cut his long hair -- for a good cause!

Chip Gaines is giving his fans a hard time -- for a good cause. 

The Fixer Upper star announced on Instagram on Thursday that he'll chop his long locks when his fans pony up and donate to St. Jude Children's Research Hospital. 

“Alright, fine. I’ll cut my hair. But first… it’s time to put your money where your mouth is. Interested? I’ll be back to tell you more tomorrow,” Chip wrote alongside a photo on Wednesday which read, “Fine, I’ll cut my hair if you…”

Sure enough, by Thursday, Chip's condition arrived. 

EXCLUSIVE: Chip and Joanna Gaines Talk Pregnancy Rumors, Don't Rule Out Return to TV

See photos of Chip and Joanna Gaines:

22 PHOTOS
Chip Gaines and Joanna Gaines on Instagram
See Gallery
Chip Gaines and Joanna Gaines on Instagram
This guy right here... I get to live life with him. I get to hear his thoughts and benefit from his wisdom and encouragement on a daily basis. The reason I am who I am today is because Chip pushed me to go for it. People think of him as a jokester, and he is. It’s a huge part of why I fell in love with him in the first place. But he is so much more than that. He is the ultimate cheerleader, coach and dream maker. I am so thrilled that his book releases today mostly because I believe it holds truth that the world is in desperate need of. I am always proud to be Chip’s wife but today more than ever. I know this book was a true labor of love. Well done, Chip Carter Gaines! #CapitalGaines @chipgaines
What a day!! #CapitalGaines #booktournyc @chipgaines
What a night ✨✨ #silobration
Today we got to take a walk down memory lane with the crew... remember this house?! This was the first home we shot for our #fixerupper pilot episode five years ago! My how time flies 📺
Thank you all for watching, caring and cheering us on these past few years. We are overwhelmed by your support and your kindness. You have become a part of our story forever. Season 5 of Fixer Upper is scheduled to start airing in November and we really have saved the best for last! (To see the full announcement about our finale season, visit magnoliamarket.com/blog)
Congratulations to my Chipstarter winners! Some may say 6 out of 2,700 is lucky.. around here we call that a miracle and I’m honored to be a small part of your story moving forward. Thank you to everyone who took the time to share your dream with me. Capital Gaines is officially out tomorrow, so go pick up a copy and keep working towards that dream of yours. #CapitalGaines (link to winning videos in my profile)
Jo has poured her heart and soul into this new line, Hearth & Hand with Magnolia available at Target November 5th. We're here with Bullseye at Target HQ today announcing it to all of their team members! I wrote down all my thoughts about this project on the blog—go check it out. #HearthAndHand (Link in profile)
@U2 tonight - I have a feeling this is going to be a good one. #U2TheJoshuaTree2017
Another #fixerupper reveal down today for Season five! @hgtv #season5iscoming
Was trying to make a video for a friend this morning with @chippergaines .... his tutorial was 👍🏽 #🤡
Once a design assistant, always a design assistant. I've got the best job in the world! #fixerupper #season5iscoming
I've got you babe! #season5iscoming #fixerupper 📹: @huntybuns
WHAT!?! 📸@brockwayne
Out on a hot date last night! @joannagaines loves to drive, so I usually let her.. but road trips, those are mine!
"We were together. I forget the rest." - Walt Whitman & @jimmydon522 Happy Valentine's Day @joannagaines
He competes with the view. Man bun, tube socks, adult onesie and all... He still looks mighty fine to me❤️#workcation #bookcamp
That was a fun date night ❤️@chippergaines @u2
Today started off with me holding one of our new baby goats and counting chickens... I knew it was going to be a good one. THANK YOU for all the kind words and birthday wishes ❤❤❤
Watch an all new #fixerupper tonight!! 9/8c @hgtv
Happpppy New Year!!! 2017!! #adultonesies @chippergaines
Tonight is an all new special episode! It's the season four Clip show- full of out takes, bloopers and behind the scenes footage. You won't want to miss! 9/8c @hgtv
HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE

"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,” the father of four teased. “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.”

“Donate to @StJude through the link in my profile, and the more money we raise over the next FOUR days, the shorter my hair goes. That’s a promise. And, who knows, maybe if you really exceed my expectations…I’ll buzz it all off,” he continued.

RELATED: 'Fixer Upper' Stars Chip and Joanna Gaines Slam Report that Security Concerns Led to Them Ending Show

ET sat down with Chip and Joanna last month, where he joked that he was growing out his hair to keep up with the cover stars of his wife's romance novels.

"These guys [have] amazing six packs on the cover!" he yelled. 

"That's why he's growing his hair out," Joanna laughed. 

"Yeah, I'm trying to keep up with Fabrio," Chip explained. "Every time I see her with another Fabio book, I'm like, 'What is so interesting about this guy?"

RELATED: Facts you didn't know about Chip and Joanna Gaines:

11 PHOTOS
10 facts you didn't know about 'Fixer Upper' stars Chip and Joanna Gaines
See Gallery
10 facts you didn't know about 'Fixer Upper' stars Chip and Joanna Gaines

They both attended Baylor University, but the two actually didn't meet in school! 

Jo's father owned tire shop and he saw a picture of her hanging behind the store counter. He convinced himself he was gonna marry Jo even before they had actually met.

(Photo: Getty)

Jo was a communications major at Baylor University and she had dreams of becoming a broadcast journalist. 

Before getting her big break on "Fixer Upper," she actually appeared in commercials for her father's tire shop. Chip eventually used the commercial in a pick-up line when they first met ... and the rest is history!

As for Chip, he had other aspirations, like being a baseball player or politician. 

If it ain't broke, don't fix it! Chip stays loyal to his favorite clothing brands. In fact, he's worn the same style of jeans and boots since they got married in 2003 -- Gap 1969 standard-fit jeans and Ariat boots.

His ladylove, on the other hand, prefers Citizen low-rise skinny jeans and Frye boots. 

As you can probably tell from all their renovations on "Fixer Upper," Jo loves to decorate with pretty blooms and greenery. Her favorite flower? Pink antique roses.
Chip and Jo's Pinterest-perfect farmhouse sits on 40 acres of land, which is just big enough for their 60 animals to roam around in.
Jo knew the value of hard work even when she was very young. Her first job? At an all-you-can-eat buffet. To this day, she says still appreciates buffet lines, but her husband has different thoughts on the matter.

The couple's first fixer-upper home? Their very own abode that they started working on soon after their honeymoon. The 1,700-square-foot Victorian home they currently live in is the ninth home they've lived in and renovated together.

The name "Magnolia," which they named all their businesses after (Magnolia Homes, Magnolia Market, Magnolia Farms) holds a special meaning. When they first started dating, Chip would bring blooms from Magnolia trees to Jo.

The Gaines family doesn't own a television! They go over to a friend's house every week to watch their own "Fixer Upper" episodes or in their hotel room during trips.

HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE

Read Full Story

Sign up for Entertainment Insider by AOL to get the hottest pop culture news delivered straight to your inbox!

Subscribe to our other newsletters

Emails may offer personalized content or ads. Learn more. You may unsubscribe any time.