Taking to her Instagram page, Kelly posted a picture of some adorable baby Nikes, captioning the snap: 'I'll be stuntin (sic) like my daddy.'
The 33-year-old star appeared on stage in Oklahoma last week wearing an uncharacteristically loose outfit, sparking speculation she had something to hide.
And after posting the confirmation picture, fans have been quick to congratulate the singer on social media sites. One Instagram follower wrote: 'Congrats...bless you all!'
The news comes just a month after Kelly wed her manager Tim Witherspoon in Costa Rica, where her former bandmates Beyonce and Michelle were guests.
At the time of the nuptials, many wondered if Kelly would have felt somewhat irked that the furore surrounding Beyonce, Solange and Jay-z's lift incident would have overshadowed the big day.
But from the looks of the photos - it seems Kelly and Tim had the perfect, low-key day they had planned.
Baby Rowland will be the second Destiny's Child baby, with Beyonce giving birth to Blue Ivy two years ago.
Congratulations Kelly and Tim!