It seems Ariana Biermann, 20, is as much of a Harry Styles fan as we are! The former reality TV star, who is the daughter Kim Zolciak, took to Instagram on October 29 to share a sweet snap with her pal before they headed to Harry’s Atlanta show. “my best friend,” she captioned a photo of herself sitting on a bar stool in a black dress with matching boots and knee-high socks.