The news comes after the shock revelation that Vicki's only daughter had eloped to Las Vegas last October where she tied the knot with her military boyfriend and father of her child, Ryan Culberson.
While Briana is now busy planning a formal wedding ceremony to celebrate her nuptials with her family, she is also making preparations for her growing family.
The reality TV star is already four months pregnant and can't wait to be a mother, a well-placed source tells us.
The news likely came as another shock for Vicki who, as RadarOnline.com reported felt "confused and sad" when she recently learned about Briana's secret elopement.
However Vicki will be able to catch all the action second time round when Briana has her formal ceremony, which will be seen on their Bravo show.