Bindi Irwin loves her brother Robert, and on his 12th birthday she posted an incredibly sweet tribute on Instagram.

“Happy birthday to the greatest brother on earth. I can’t believe that it was an entire 12 years ago today when I met my little brother for the first time. Since that day he has grown up to be the smartest and most amazing boy on earth. Being a big sister is the greatest job of all. I love you so much, Robert. And I’ll be here for you forever,” she wrote.

Check out the adorable photo:

Happy birthday to the greatest brother on earth. I can't believe that it was an entire 12 years ago today when I met my little brother for the first time. Since that day he has grown up to be the smartest and most amazing boy on earth. Being a big sister is the greatest job of all. I love you so much, Robert. And I'll be here for you forever.

A photo posted by Bindi Irwin (@bindisueirwin) on Nov 30, 2015 at 12:16pm PST

This year’s Thanksgiving was also the first with boyfriend Chandler Powell.

“This is the face of joy after getting the right end of a wishbone for the first time on Thanksgiving and being granted one wonderful wish. Honestly, I only ever wish for more time and happiness with my beautiful family. Thankful for food on the table and such gorgeous, genuine people in my life. Spending Thanksgiving in America was a blessing, but I really believe we should count our blessings each and every day, at every meal and moment with those that we love,” she captioned a photo of her and Powell.

This is the face of joy after getting the right end of a wishbone for the first time on Thanksgiving and being granted one wonderful wish. Honestly, I only ever wish for more time and happiness with my beautiful family. Thankful for food on the table and such gorgeous, genuine people in my life. Spending Thanksgiving in America was a blessing, but I really believe we should count our blessings each and every day, at every meal and moment with those that we love. Ps. Please pardon my feet in this picture, 3 months of dancing and they look a little interesting. I assure you they are getting better x

A photo posted by Bindi Irwin (@bindisueirwin) on Nov 29, 2015 at 11:14am PST

It’s been a big month for Bindi Irwin. Last week, she was crowned the winner of this season of Dancing With the Stars.

Of course, her late father Steve Irwin was always on her mind.

“I couldn’t even imagine if [he] was here right now,” she told reporters following her big win. “Honestly, I hope that he’d be proud of me. And I hope that I am able to carry-on in his footsteps and make sure that his legacy lives on.”

I am speechless. This is a gift and I can't tell you how much love I have for all of your support throughout this beautiful journey. My life has been changed.

A photo posted by Bindi Irwin (@bindisueirwin) on Nov 24, 2015 at 10:22pm PST