Miranda Kerr Smiles in Sydney

Miranda Kerr is all smiles while out on Thursday (February 16) in Sydney, Australia.

The day before, the 28-year-old model hit the runway for the David Jones Autumn/Winter 2012 season launch.

Celeb trainer Andie Hecker recently revealed how Miranda got back into tip-top shape after giving birth to Flynn.

“[Ballet Bodies is] actually a workout that utilizes true ballet fundamentals placed atop Pilates, traditional personal training, and various cardiovascular activities such as jumping and kicking,” she told FitSugar, which provides a step by step for four arm-strengthening workouts.