Miranda Kerr arrived at the airport in Sydney looking ready for Spring in a bright blazer yesterday. She was in her native Australia fulfilling her duties as a Qantas global ambassador. Miranda modeled the airline's new uniforms and dressed up for a gala dinner with fellow ambassador John Travolta and his wife, Kelly Preston. Miranda also revealed a collaboration with the Australian company and her own Kora Organics line, which is now being sold online through Qantas's frequent-flier store. It looks like she has plenty to keep her busy despite no longer being under contract with Victoria's Secret, and she'll have even more on her plate tomorrow, when she celebrates her 30th birthday.