Bindi Irwin Returns To Social Media Following Family Fallout, Hides Torso Amid Rumors She's Pregnant With Baby No. 2

Bindi Irwin returned to social media just in time to celebrate her 23rd birthday.

The daughter of late Crocodile Hunter star Steve Irwin had taken a break from Instagram and Facebook following damning allegations she made against her paternal grandfather, Bob Irwin. It was then reported that the young mother's hiatus might also be linked to a rumored secret second pregnancy.

"My first birthday as a mama has been the most beautiful gift," she captioned the post. "Our sweet Grace Warrior's face says it all. Today I celebrated by feeding Monty the crocodile and hugging my gorgeous girl (not at the same time!). Thank you for the lovely birthday messages and kind support, it means the world to me."

Sharing a sweet image of himself holding a sea turtle while his spouse held a smiling Grace in front of her, the former professional wakeboarder from Florida wrote, "Happy birthday to the most amazing woman I know. Wife, mother, and Wildlife Warrior. My favorite thing about you is your kind heart. You dedicate each day to bringing happiness and love to everyone around you. Today it's our turn to celebrate how incredible you are. I love you."

Bindi's brother, Robert Irwin, also got in on the love. He posted a closeup selfie featuring him, Chandler, Bindi and Grace in her usual spot – right in front of her mama.

"Happy birthday @bindisueirwin," the 17-year-old fellow conservationist captioned the picture. "You've always been the best sister, and now it's so cool to see you as such a wonderful mum to little Grace! I'm so proud of you! (Ps. You and Chandler are raising an absolute fashion icon)."

As RadarOnline.com previously reported, the Crikey! It's The Irwins star is reportedly secretly pregnant with baby No. 2, just four months after welcoming her first child.

"Bindi and Chandler knew from the get-go that they wanted a bunch of kids and they feel there's no reason to wait," a source told Australia's Woman's Day earlier this month, adding that Bindi was "so happy" and "walking on air."

As for her immediate family – including her mother, 56-year-old Terri Irwin – the insider said they were all "thrilled."

One relative who may not even know about the reported pregnancy, however, is Steve's father, whose strained relationship with Bindi recently made headlines.

Last month, Bindi announced she would be taking a break from both social media and "most of [her] work in the public eye" after claiming that Bob "has returned gifts I've sent him after he opened them, he has ignored my correspondence and from the time I was a little girl he has ignored me, preferring to spend time doing anything else rather than being with me."

She added, "He has never said a single kind word to me personally."