Article continues below advertisementOprah Winfrey continues to flaunt her slimmer figure Down Under. The iconic talk show host's tiny waist was cinched in a corset-style white dress for the kick-off of her Australian speaking tour in Sydney on Wednesday, December 3. Posting a video to Instagram that showed her walking toward the stage, the 71-year-old could be seen strutting her stuff in the curve-hugging dress. Article continues below advertisementSource: @oprah/instagramOprah Winfrey kicked off her Australian speaking tour on Wednesday, December 3.