Background: The Walmart Supercenter location in Antioch, Tenn. (Google Maps). Inset: Diamond Tankard (Davidson County Sheriff”s Office).

A Tennessee woman who once appeared on a Bravo reality series is out on bond after being charged with aggravated assault at Walmart.

Diamond Tankard, 21, was arrested on Saturday and charged with aggravated assault with a deadly weapon and theft after an incident at a Walmart Supercenter in Antioch, a suburb of Nashville. According to an arrest affidavit reviewed by Law&Crime, Tankard was caught on surveillance cameras inside the store on Friday, allegedly attacking another woman on the checkout line. The alleged victim’s grandmother, who witnessed the altercation, told police that Tankard used a “sock filled with rocks” as a weapon.

According to the affidavit, police arrived at the Walmart after the assault was reported. The victim alleged that Tankard “came from behind” while she was at the self-checkout section of the store, “grabbed her by the hair, and began to assault her,” police said. After the apparent assault, Tankard then allegedly stole the woman’s iPhone, worth $1,500, and her Louis Vuitton handbag, worth $900.

Police said the woman had a visible laceration on her forehead above her left eye. The woman’s grandmother told police that Tankard allegedly struck her granddaughter with a “sock filled with rocks.”

Tankard — who appeared on the Bravo reality show “Thicker Than Water” as a child — was identified after police viewed the store’s video footage, which was provided by the staff. She was reportedly seen “gathering items from the ground” that police believed were the stolen items. Tankard then ran from the store.

The woman was taken to the hospital and received stitches.

Tankard was arrested by the Metro Nashville Police Department and taken into custody on Saturday, charged with aggravated assault with a deadly weapon and theft. She posted $25,000 bond on the same day. Her next court date is scheduled for Aug. 22.