During her Wednesday concert, Houston announced to the audience that it was her daughter Bobbi Kristina's 17th birthday and dedicated the track Who Would Imagine A King to her!!
A source says:
"[It's] one of Krissy's favorites, and is not in the show."
She then got Bobbi Kristina and a birthday cake out on stage and, along with the ENTIRE audience, sang Happy Birthday!!
The source claims that Houston had another celebration planned, as well:
"They rented a beautiful boat and took a four-hour cruise all around Sydney Harbor with Krissy's friends, the dancers and family members. That was the pre-birthday celebration. The cake at the concert was a complete surprise to Krissy. She had no idea!"
Whitney, she must have been THRILLED!! Not only for the surprise, but to see her mom doing so well and performing again!!
We hope Bobbi Kristina had a FANTASTIC 17th birthday!!
[Image via WENN.]