A woman busted for leaving her infant in the car as she allegedly downed two shots at a Texas bar could be seen beaming a bright smile in her mugshot.

Samantha Grace Vaughan was grinning and sporting a gash on her forehead after her 2 a.m. arrest on Sunday for child endangerment charges outside of Trackside Night Club in Copperas Cove.

Authorities had been dispatched to the nightspot when somebody called about a 1-year-old child left inside a running car, according to an arrest affidavit.

Police found Vaughan’s infant sleeping in a safety seat in the back of the unlocked Buick, the records said.

Copperas Cove police then found the child’s mom inside the bar. At first Vaughan told cops she simply stopped inside to go the bathroom, despite reeking of booze, the affidavit said.

Vaughan then admitted to drinking two shots, and then spewed a racial epithet, prompting cops to cuff her.

The mother again changed her story, telling cops she went to the bathroom, found her husband and then drank.

When officers told her she was under arrest, she resisted.

Cops placed her in the back of their patrol car, where she “smashed her forehead into the steel bar twice causing a small laceration to her head,” the affidavit said.

Her head injury is visible in her booking photo.

In addition to child endangerment, Vaughan was charged with resisting arrest and making a terroristic threat against a public servant.