Get ready to "aww," people. Kim Zolciak's daughters, Brielle and Ariana, are officially Biermann's. Kim's hubby, Atlanta Falcons player Kroy Biermann, has stepped up to adopt the girls as his own. The former Real Housewife of Atlanta took to Twitter to share her overwhelming joy.

"Am I not the luckiest girl in the world!!!!!!??? My girls @BrielleZolciak @arianazolciak are officially adopted by Kroy!!!!," Kim gushed as the adoption scene in the courthouse played out on the Don’t Be Tardy season finale.

Kim also retweeted a post from her oldest, who is just as ecstatic about the news.

@BrielleZolciak: i have tha best dad ever @biermann71," the teen wrote.

Congratulations to the entire Zolciak-Biermann clan for becoming a family of six... almost seven!

Are you surprised that Kroy went through with the adoption? Share your reactions below!