Credit: Instagram

The day has finally come: Teresa Giudice is officially the mother of a teenage girl. Her oldest daughter, the beautiful Gia Giudice, just turned 13 years old and Teresa couldn't be more proud of her little lady.

The Real Housewives of New Jersey star took to Twitter to announce her baby's major milestone.

"Happy 13Th Birthday to my Beautiful Teenager @TrueGia we LOVE you so much kisses from Mommy & Audriana," Teresa wrote next to a photo of herself and her youngest girl, Audriana, smiling pretty at the camera.

Now the fun can really begin at the Giudice household. We can only imagine what life will be like for Joe and Teresa when they have four teenage girls in the house trying to share a bathroom, especially with that sassy little Milania in the mix.

Still, the idea of hormonal high-school girls may be daunting, but we're sure the Jersey couple is more than happy to take on the challenge, now that there is a possibility of them missing all the fun.

The Giudice parents are currently awaiting their trial date, after being charged with an astonishing 41 counts of financial fraud. They could end up in jail for as long as 50 years if found guilty. Even if they only get five or ten years behind bars, they will still be missing out on some of their four daughters' most important milestones. So sad!

Here's hoping that jail time is the worst-case scenario and that the Giudices' legal team is able to come through for the couple.

Can you believe that Gia is 13 already? Share your thoughts in the comments below!