Ciara is expecting her first child with Seattle Seahawks quarterback Russell Wilson, three months after the couple tied the knot.
Both stars announced the pregnancy by sharing the same photo on Instagram on Tuesday night, a black and white shot with the NFL star rubbing the singer's tummy.
Ciara, who turned 31 on the same day, wrote: "On this special Birthday I received an abundance of love from friends and family.. and I'm excited to Finally share one of the Greatest Gifts of All that God could give..."
She followed this with a series of emojis, including a baby and a bottle.
Russell wrote that it is "The Greatest Blessing of All" and also used the hashtag #BabyWilsonOnTheWay.
This is the 27-year-old sports star's first child, while Ciara has a two-year-old son from a previous relationship with rapper Future.
Russell and Ciara famously abstained from sex before their July wedding in England, although the Goodies hitmaker previously confessed she wasn't finding it easy.
She said: "It's going pretty good. We're hanging in there."
She added, to Cosmopolitan: "I'm not gonna lie. I'm human, so it is not easy, especially when I look at him and I think he is the most beautiful thing I've ever seen - that I've ever laid my eyes on, to be honest. I'm like, 'Look the other way! Look the other way!'"
They have been an item since early last year.