PEOPLEChristie BrinkleyAdd TopicChristie Brinkley turns 66: Her life in pictures through the yearsUSA TODAY-UnknownIn this ever-changing world, at least two things are a constant: Christie Brinkley has always been a knockout (even in her 60s) and she always looks like she's having more fun than anyone else. Click forward and revisit her last three decades.Myrna M. Suarez, FilmMagic1988: Brinkley and her second husband, singer Billy Joel, pose in front of a piano from his groundbreaking tour of the Soviet Union which they donated to the Hard Rock Cafe.Frankie Ziths, ASSOCIATED PRESS1990: Brinkley and Joel hit the International Rock Awards in New York, where he was named the most valuable player on keyboards.Peter Morgan, ASSOCIATED PRESS1991: Brinkley and daughter Alexa Ray tag along to watch Billy Joel deliver the commencement speech at Connecticut's Fairfield University in May. The couple would divorce in 1994 after nearly 10 years of marriage but remain close friends.Bob Child, ASSOCIATED PRESS1994: Brinkley, spends a night at the circus with then-fiancé Richard Taubman, a real-estate investor with whom she'd survived a helicopter accident in Telluride, Colo. They married in December of that year and divorced in 1995. They had one child together, son Jack Paris Taubman.JIM SMEAL, RON GALELLA, LTD.1995: Brinkley sported a milk mustache for the iconic dairy commercial, along with daughter Alexa Ray Joel and infant Jack Paris Taubman, her son from her third marriage to Richard Taubman.NONE, NONE1996: Christie Brinkley married architect Peter Cook on Sept. 21 at their home in Bridgehampton, N.Y.JANN GAMBLIN, Associated Press1999: Brinkey headed to Sarajevo, Bosnia as part of a USO tour featuring supermodels, with husband Cook tagging along as photographer.PETER COOK1999: Brinkley recently poses with troops in Sarajevo.PETER COOK, XXX2003: Brinkley and Cook mark the last British Airways Concorde flight from New York to London.ED BETZ, AP2004: Brinkley also knows her way around behind the camera. Here, she shoots the 2004 men's singles championship at the U.S. Open between Switzerland's Roger Federer and Australia's Lleyton Hewitt.GREG BULL, AP2004: Brinkley hits the Conde Nast Traveler Readers' Choice Awards with Cook and her two young children, Sailor Lee and Jack Paris..Scott Gries, Getty Images2008: Brinkley emerges victorious from a Long Island courthouse after reaching a settlement in her divorce from Peter Cook in July. The agreement gave Brinkley custody of their daughter Sailor.Mary Altaffer, AP2008: Brinkley came out to support daughter, Alexa Ray Joel during a May performance at Connecticut's Mohegan Sun casino. Alexa's dad, Billy Joel, was kicking off the first of his 10 sold-out shows there.PR NEWSWIRE2009: In August, Brinkley took son Jack to meet the Jonas Brothers in East Hampton, N.Y.Kevin Kane, Getty Images2009: Brinkley, left and daughter Sailor Cook snuggle some puppies along with Beth Stern, right the reopening of Lord & Taylor in Garden City, N.Y., in November.Cindy Ord, Getty Images For Lord & Taylor2010: Brinkley hangs out with 'Sopranos' star Edie Falco at August's 21st Annual Einstein Family Day Wild, Wild West Carnival in Bridgehampton, N.Y.Steven Henry, Getty Images2010: Brinkley and daughter Alexa Ray check out the 'Last Play At Shea' after-party during the 2010 Tribeca Film Festival.Jemal Countess, Getty Images For Tribeca Film Fe2013: Brinkley poses with model Kate Upton at that year's Style Awards, held Sept. 4 at New York's Lincoln Center.D Dipasupil, FilmMagic2013: Christie Brinkley and son Jack cheer on the New York Knicks vs the Atlanta Hawks at Madison Square Garden on Dec. 14.James Devaney, FilmMagic2014: Brinkley high-fives daughter Alex Ray Joel after coming offstage at New York's Cafe Carlyle in June.Astrid Stawiarz, Getty Images2015: Brinkley kicks up her heels outside the Sirius XM studios while promoting her book 'Timeless Beauty' in November.Josiah Kamau, BuzzFoto Via Getty Images2016: Brinkley shows she can model skinny jeans as well as any 20-year-old at the NYDJ Fit To Be Campaign Launch in January in New York. She would kick off 2017 by reappearing in the Swimsuit Issue of 'Sports Illustrated' with daughters Alexa Ray Joel and Sailor Lee Cook.Desiree Navarro, WireImage2017: Brinkley makes being green look easy at the VIBES by Sports Illustrated Swimsuit 2017 launch festival on Feb. 18.Rick Kern, Getty Images For Sports Illustrated2018: Brinkley, right, laughs with daughter Sailor Brinkley-Cook at a Miami Heat-New York Knicks game.Frank Franklin II, AP2019: Brinkley-Cook took her mother's place on "Dancing With the Stars" after Brinkley broke her arm days before the show's September premiere.Allen Berezovsky, Getty Images2020: Brinkley celebrates her 66th birthday one day early at the Big Apple Circus as guest ringmaster on Feb. 1.Myrna M. Suarez, WireImage2020: Christie Brinkley, seen here at a Feb. 3 a screening of National Geographic's documentary "The Cave," celebrated her 66th birthday with an Instagram post about all her latest achievements. "With age comes wisdom and confidence which I find to be liberating! I also know I feel my best when I look as good as I feel," she wrote.Astrid Stawiarz, Getty Images For National GeograFeatured Weekly Ad