Christie Brinkley has been mistaken for her 28-year-old daughter Sailor, who is more than four decades younger than her. The eighties supermodel easily defied her 72 years as she struck a sexy pose in front of a retro red Ford F-100 truck in her latest Instagram slideshow. Brinkley bared a shoulder in a navy-blue bell-sleeved top, tucked into matching silver-button shorts and beige accessories. The iconic blonde was

promoting her zero-sugar booze brands, Bellissima Prosecco & Wines and Bella Sprizz, which she emphasized make ‘a perfect gift.’‘My exercise is gardening. Compost bags are heavy,’ Brinkley exclusively told the Daily Mail last Friday. ‘I moved them up and down my hilly terraced garden, digging, planting, sawing branches, raking, and everting every sweaty (it’s hot!) minute. And my diet is eating what I grow!’ Brinkley’s amazed 1.7 million followers took to the comments section, including one Instagram user who prayed: ‘Please dear Lord let me age like @christiebrinkley.’ ‘I thought you were your daughter for a second!’ another fan wrote. ‘OMG, I thought this was your daughter!’ another Instagram user agreed. ‘You look amazing! But you always look amazing! I think you have a million dollar smile! Your daughters won the gene lottery!’Coincidentally, Sailor, who works as a Ford Model, also popped into the comments section to marvel: ‘Hot.’ The Uptown Girl author welcomed her lookalike nepo baby during her fourth marriage to architect Peter Cook, which ended in 2008 after 12 years. Brinkley is also mother to 40-year-old daughter Alexa Ray Joel and 31-year-old son Jack Brinkley-Cook. Jack is from Brinkley’s third marriage to ex-husband real estate developer Richard Taubman, which ended in 1995 after less than a year.The Michigan-born, Malibu-raised beauty welcomed her eldest Alexa during her nine-year marriage to five-time Grammy winner Billy Joel, which ended in 1994. Brinkley opened up about aging in a recent interview. ‘I think that with age you get… freer,’ Brinkley told her Social Life Magazine cover story in June. ‘You do what you wanna do when you wanna do it. I think that there’s a freedom that comes with age that’s quite wonderful. You don’t really care what anybody thinks about your outfit anymore. ‘You know what you like. You know what you don’t like. And you don’t feel like you have to put up with the stuff that you don’t like anymore.’And while the life-long vegetarian has admitted to using ‘Botox in my forehead two times’ and laser treatments, she reportedly only gets injectable filler once a year on her marionette lines. The Hamptons resident will next portray the older Kelly opposite Steve Guttenberg’s older Mikey in director Michael W. Gray’s coming-of-age family comedy American Summer, which hits limited US theaters September 4. Brinkley also keeps busy running her clothing company, Tower Hill.