Television personality and former competitive swimmer Johanna Griggs has turned heads with a stunning new makeover ahead of Channel Seven's annual Upfront event in Sydney.

The Better Homes and Gardens host took to Instagram on Thursday to showcase her chic new look, which featured glowing, natural makeup with shimmery eyeshadow and a soft pink-nude lip.

Her golden-blonde hair was swept into an elegant updo, showing off a pair of diamond drop earrings and a white-gold pendant.

She completed the ensemble with a sleek blue Portmans power suit over a black blouse, her Order of Australia (OAM) badge pinned neatly to her blazer's left lapel, and classic black open-toe pumps.

"I was very proud to take part in the @channel7 Upfront, joining so many of my peers to spruik what's to look forward

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