The "Wrecking Ball" singer, 26, has been romantically linked to Australian singer Cody, since the pair were spotted kissing last week, following her split from her husband of eight months, Liam Hemsworth, in August. Their PDA came after Miley's very public rebound romance with reality TV star Kaitlynn Carter, which ended after six weeks last month.
The rumoured new couple is making no attempt to keep its romance private, as the 22-year-old posted a photo of him and Miley on his Instagram Story, kissing her on the head with the caption: "Pre swim breakfast courtesy of baby."
While fans were quick to note Cody's choice of words, "Slide Away" hitmaker Miley got in on the fun hours later, simply writing "BABY" alongside a snap of herself on her own Instagram Story.
She then posted a photo of herself as a child, plus a side-by-side shot of herself as a tot alongside a current one, with the caption: "As a BABY!"
Miley previously called Cody "one of my best friends", and a source told Entertainment Tonight they have no plans to embark on a serious relationship together.
"They have hooked up in the past... (but) have no plans to start dating each other exclusively," they shared. "They both just want to have fun and are open and honest with each other about that."