2011 G’Day USA Brings Out The Travoltas, Ryan Kwanten & A Bevy Of Aussies [PHOTOS]

Kelly Preston made her first major public appearance at the 2011 G’Day USA gala since giving birth to her son Benjamin. She was joined at the event by her husband John Travolta. Kelly Preston told reporters that husband John Travolta sings “all the time” to their brand-new baby boy. “I make up songs,” Travolta, 56, explained. “I was changing him the other day, and I wanted to entertain him so he didn’t get upset, so I made something up.”

John sang his original ditty for reporters: “Benjamin Hunter, that’s my name! Benjamin Hunter, that’s my name! Benjamin Hunter. Ba ba bum. Ba ba bum!”

PHOTOS: Kelly Preston Shows Off That Huge Baby Bump

To attend Saturday’s event, Travolta and Preston, 48, left their little guy at home with his big sister Ella Blue, 10, and a babysitter. “I called home three times in the last hour and he’s doing well,” the actress said Saturday. “He’s perfect! He’s fine. Ella loves Benjamin,” Travolta noted of their daughter. “She just can’t stop loving him.”

Also baby free at the event were Simon Baker, Abbie Cornish, Ryan Kwanten and a slew of other pleasant to look at individuals. Check out all the photos from the red carpet in the gallery.