Kim Zolciak-Biermann of RHOA Shares Photo of Daughter Ariana on 18th Birthday & She Is the Spitting Image of Mom

It was a bittersweet moment for "Real Housewives of Atlanta" star Kim Zolciak-Biermann as her daughter Ariana turned 18 over the weekend.

Still not being able to get over the fact that her girl is so grown, Kim took to her Instagram page yesterday to share a laughing picture of Ariana, with a celebratory cone on her head.

She captioned the photo:

"My baby is really 18."

As seen in the post-birthday photo, Ariana has blossomed into quite a woman with a look and fashion sense akin to her mom's.

The newly turned 18-year old also tantalized her Instagram followers on Sunday with sweet photos of herself rocking her birthday hairdo. The mother-daughter resemblance is, no doubt, undeniable.

According to Bravo, Kim and her daughter had a more quiet and intimate celebration after Ariana's birthday bash on Oct 17 as they went out for dinner.

The proud mom shared the photo of the duo on her Instagram as a tribute to her daughter on her special day.

The photo, which showed Kim looking lovingly at Ariana while she smiled at the camera, is a testament to their resemblance. The gorgeous mother penned a lengthy note beneath the photo.

In the emotional piece, she had stated how unbelievable it was that Ariana was now 18.

Describing the years as incredible, she went ahead to say she was proud of the woman Ariana has become. She concluded the post, writing:

"I look forward to watching you move mountains, chase your dreams and accomplish all your goals! There is no doubt you are a force to be reckoned with. Your dad, siblings and I love you far beyond words could ever describe! HAPPY BIRTHDAY,"

Kim revealed to Bravo TV on October 15 that Ariana has been accepted into her dream college, Arizona State University. To celebrate the achievement, Kim bombarded her Instagram story with Ariana's senior year photos.

Ariana has always been effortless at looking good, and her homecoming dance was no exception. As reported by Hollywood Life, Ariana stunned in a pink Sheri Hill dress. She paired the outfit with a pair of platform nude lace-up sandals.

Her date was her best friend Camden Crouche, as seen in the caption of the post.