Braxton is a cast member of the shows "Braxton Family Values" and its spinoff "Tamar & Vince."
"I have a love on top! I am pregnant," Braxton said on "GMA." "I feel great and greedy at the same time. This is the most I've eaten ever."
This will be the first child for Braxton and her husband, music mogul Vince Herbert.
"I don't have that many months to go. Almost there," she said.
Braxton did not say if she knows what the baby's gender is.
The new season of "Braxton Family Values" is to premieres Thursday on WE tv. It co-stars Braxton's sisters Toni, Traci, Towanda and Trina, as well as their mother, Evelyn.