The Titanic costars reunited at the 88th Annual Academy Awards in Los Angeles on Sunday night.
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The two have been vocal about their love and support for one another, with Winslet saying she believes this could finally be the year DiCaprio wins an Oscar.
"I do think it probably will be [him]," Winslet told BBC News of DiCaprio, who is nominated for his role in The Revenant. "I think you can sort of feel it and I think that everyone wants it for him."
She added, "It would just be amazing."
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The Steve Jobs actress stunned in a custom black strapless Ralph Lauren gown while the Revenant star looked dapper in a sleek Armani black tuxedo with a matching bowtie.
Winslet, 40, arrived to the awards show with her husband, Ned Rocknroll. He stood behind her as she posed for photos on the carpet, looking adoringly in her direction. He even managed to snap a few of Winslet as she did press.
Keeping to his awards show tradition, DiCaprio hit the carpet with his mother Irmelin and father George by his side, along with his father's wife Peggy.
His father told PEOPLE that he has his fingers crossed that DiCaprio goes home with a golden statue.
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DiCaprio is favorited to win the highly-coveted Best Actor award for his performance in The Revenant, while Winslet is nominated for Best Supporting Actress for her turn in Steve Jobs.
The 88th annual Awards, hosted by Chris Rock, are being presented live on ABC from the Dolby Theater in Hollywood, California.