The "Wildest Moments" singer took to Instagram to share the happy news.
Ware added in the caption to the image, "Dropping this year, and it's not the album."
The 31-year-old later shared a snap of an indulgent milkshake, topped with a cookie and toasted marshmallow, writing, "Pregnancy diet going really well so far."
The star wed her childhood sweetheart Sam Burrows in August, 2014 during a romantic ceremony on the Greek island of Skopelos, where the pair got engaged.
The mother-to-be first met her husband at school before reconnecting as teenagers. Their wedding invitation featured a picture of them taken in 1996, when they were aged 11.