At Bindi's wedding to Chandler Powell, Irwin said her 16-year-old son, Robert, walked his sister down the aisle wearing khaki, which held a special meaning to them. Terri revealed that her husband, the late "Crocodile Hunter," wore matching khaki outfits to a wedding with his son years ago.
"Remembering @RobertIrwin’s first wedding. I love that Steve and Robert both wore khaki," she wrote in a tweet posted Saturday.
"I know Steve would have worn khaki to Bindi & Chandler’s wedding, too," her message continued. "I wish he could have been there to see the most special day in his daughter’s life. We miss him so much."
Bindi Irwin described in her wedding announcement that her family lit a candle in her father's memory at the ceremony. She said their family shared "tears and smiles and love."
"I know that Dad was with us," Robert Irwin wrote in his own post.
Steve Irwin's widow Terri also shared a photo of Bindi as a little girl and reflected on how her daughter has always loved weddings.
"It seems like I just blinked my eyes and she was celebrating her own wedding with her soulmate, Chandler," she wrote in the tweet.
She also told the couple to "treasure each day of your happily ever after."
Bindi shared a screenshot of her mother and Robert's messages for her and shared how appreciative she is for the support from her family.
"Mum and Robert’s support has meant the world to me and Chandler during this special time in our lives," she wrote in the caption of her post. "I had to share with you some of their kind words. I have happy tears. ❤️ This is the true meaning of family and love."