Real Housewives of Orange County's Meghan King Edmonds is one hot mama-to-be!

The 31-year-old posted a pic of her growing baby bump to Instagram on Wednesday, writing, "Today is #bumpday! And you know I can't pass up a good excuse to show off this beautiful growing baby girl!"

The reality star is expecting her first child, a daughter, with husband Jim Edmonds, 46, who has four kids from previous marriages.

Scroll through the gallery to see more photos of the blonde beauty's burgeoning belly!