Real Housewives of Orange Country alum Vicki Gunvalson is going to be a grandma! Her daughter, Briana Wolfsmith, is pregnant.

Briana is pregnant and just about four months along, a source told Us Weekly magazine.The joyful news comes on the heels of Briana's impromptu marriage to her army beau boyfriend. 

Briana Wolfsmith married Ryan Culberson last October. The two eloped in Las Vegas, at the closest wedding chapel the could find, in an impromptu ceremony. Ryan Culberson is a U.S. solider who recently fought in Afghanistan. Both the elopement and the pregnancy were definitely a surprise to Vicki, the source told Us Weekly.

Briana is really happy, and now that Vicki knows, she's really excited too.

Briana Wolfsmith has had a rough time after a thyroid-cancer scare. Doctors found numerous tumors in her neck which had to be removed. The 24-year-old and her beau married in Las Vegas one week after he returned from Afghanistan and six weeks after her thyroid surgery.

Vicki was unaware of the marriage and was supposedly disappointed to have missed out on her only daughter's special day. But, the RHOC star will get to see her baby girl walk down the aisle after all. The family has planned a lavish wedding ceremony for this month. Hands-on-mom Gunvalson reportedly played a major role in the preparations. 

Vicki spent six months planning the ceremony.  The only issue I have is that we are over budget, Vicki told Star magazine. We are at about $47,000, but who's counting? We spent a little bit more on food and the venue, which we think is so important. We spent money where it counts. 

Wolfsmith and her husband will renew their marriage vows in Santa Barbara on a cliff overlooking the ocean, reported Reality Tea. The marriage will be followed by sunset cocktails and an evening reception.

It's kind of small. We're only inviting 75 to 100 people... mostly family and very close friends, said Briana.

Now that Briana is pregnant, it will surely be a double celebration. My love tank is full! Gunvalson told Us Weekly in April.

Briana seems happy as well. Her Twitter bio reads: I'm getting ready to launch our 7th season of The Real Housewives of Orange County on Feb 7th. I'm an ER nurse, love my husband and I have an amazing family! 

Over the course of the seven seasons of RHOC, viewers got to see the close bond between Briana and her sometimes-overbearing mother.

Preivously, Briana was in a serious relationship with her high school sweetheart, Colby. The couple broke up in 2008 after Colby revealed that he had cheated on her with a younger girl.