The Home and Away star shared the news via Instagram, posting a photo of herself on the beach wearing a white bikini, showing off her glowing complexion.
"Super excited to announce that I am the first ever Aussie ambassador for @GilletteVenusANZ ✨💎🤗 ".
Miller, 33, who plays policewoman Katarina Chapman on the long-running Channel 7 soap, is mum to sons Isaiah, 14, and 10-year-old Lennox.