The former 'Made in Chelsea' star uploaded the photograph to the photo sharing site as she vacationed in South Africa.
Captioning the picture, which saw her pose in front of a full length window with just a mug in her hand, she wrote simply: "My morning view."
Meanwhile, the 27-year-old television personality - who split from husband Professor Green earlier this year - previously admitted she has "grown and changed" over the year.
She shared: "The last year has had lots of change. I feel like I've grown and changed. A lot of things that maybe had to happen happened and I feel like I've come out and I'm feeling positive about the future.
"It's obviously really sad when a relationship comes to an end. But all I want is just to wish him happiness in the future. It's just moving on now."
And Professor Green - real name Stephen Manderson - recently revealed he plans to document the couple's messy split in a new album.
Asked if she'll be unhappy with the music he plans to release, he said: "I think that can be assumed. But I'm not worried about that. People assume they know me and they know the box I fit into but I grew up rapping a totally different way. I hope people will let me release the music and the style that I want. I'm not going to be nice just to sell records."
Since the pair split, Millie has started dating her former flame Hugo Taylor. She uploaded a photo of them kissing just days after her divorce was finalised, writing alongside the picture: "What a perfect end to an amazing weekend #hugodirty30 (sic)."