Amanda Seyfried is one to keep out of the press, with her private life and acting career kept as apart from one another as possible.MORE: Amanda Seyfried looks very different in childhood close-up you need to seeHowever, The Mean Girls star took to Instagram to promote her latest collaboration with Swiss luxury watch manufacturer, Jaeger LeCoultre. In the captivating video, Amanda looks breathtaking in a classic black gown with her hair swept to the side. She uses her acting talents to sell the new "Rendez-Vous Dazzling Shooting Star" as she alternates between dreams and reality.WATCH: Amanda Seyfried's husband Thomas Sadoski entertained their baby son while watching the latest football matchThe watch is stunning and has a striking look with its intricate embellishments.