"Good luck, Leo! Everyone loves you because you're the best," the British singer -- also an Oscar winner -- captioned a photo of herself standing on the iconic stairs from one of DiCaprio's most well-known movies, Titanic. "Meet me at the clock anytime, bruv.X."
Although this marks DiCaprio's sixth Academy Award nomination, the 41-year-old actor has yet to take home a golden statuette. DiCaprio is nominated for Best Actor for his portrayal of frontiersman Hugh Glass in The Revenant. He was previously nominated for The Wolf of Wall Street, Blood Diamond, The Aviator, and What's Eating Gilbert Grape.
The real party kicks off Sunday live from the Dolby Theatre at the Hollywood and Highland Center in Los Angeles. As we patiently wait to see if DiCaprio will take home a shiny golden Oscar, press play on the video below to hear Winslet explain why she's #TeamLeo.
Don't miss ET's live Academy Awards pre-show on Pop this Sunday, Feb. 28., starting at 5 p.m. ET/2 p.m. PT. Go to PopTV.com to find out where to watch. You can also catch all of ET's live coverage right here on ETonline.com, on Twitter (@etnow), Instagram (@entertainmenttonight) and our official Facebook page.