Joseline Hernandez, star of VH1's hit reality series "Love and Hip Hop Atlanta," doesn't have time for fake friends. She calls out co-star Karlie Redd for being a bad friend, and the claws come out in the new sneak peek of the upcoming season finale.

In the clip, Redd shows up to Hernandez's performance at S.A.P. in Scottdale, Ga. to show her support, because "that's what friends do," she says.

Meanwhile, Hernandez works it onstage, performing her tracks for an enthusiastic crowd in support of the Trevor Project, the non-profit that aims to prevent suicide amongst teens in the LGBT community.

"I just wanna thank everybody, this has been my dream since I was a little girl," Hernandez says to the crowd. "As a fellow gay or bisexual, I just wanna commend everybody for being so fearless. Thank you so much."

Her emotions ran high after her show, and Redd joins Hernandez in her dressing room backstage. But instead of congratulating her friend on her amazing performance, Redd only wants to discuss gossip involving Hernandez's husband, music producer Stevie J. She tells Hernandez about a rumor she heard that Stevie invited Mimi and Eva to come to Los Angeles with him.

"I'm just so sick and tired of Karlie Redd coming to tell me sh--," Hernandez says in her on camera interview. "It's like, are you trying to hurt me? Do you tell me things to like put pain in me? Now you wanna come up in here and tell me this nonsense with Mimi, bitch is you crazy? Is you my friend or not?"

Hernandez confronts Redd about her gossiping. After the women exchange words, she picks up Redd's purse and tosses it out of the door, kicking Redd out of her dressing room. Hernandez then hits Redd in the face with the bouquet of roses she's holding, and a fight breaks out.

"I'm sick of your fake ass, b----!," Hernandez yells out from behind three security guards who are holding her back from Redd.

Watch the sneak peek of the "Love and Hip Hop Atlanta" season finale below, and be sure to catch the episode when it airs on Monday, August 17 at 8 p.m. on VH1.