Kourtney Kardashian hasn't had Botox injections in four years

During an episode of The Kardashians, Kourtney tells her younger sister Kim, 45, about her decision, saying: "I haven't got Botox in four years to keep my third eye open."

The third eye is believed to be a mystical energy centre located on the forehead and Kourtney explained it helps her with her "intuition".

Kim then joked: "Why are you looking at me when you say this?" and Kourtney added: "I'll never get it again."

Kim told her sibling she had Botox jabs "two nights ago" before telling Kourtney: "Good for you".

Elsewhere in the episode, Kim opened up about her experience of studying for the bar exam as part of her mission to become a lawyer.

Kim revealed she was suffering back problems in the lead up to the test, saying: "'I threw my back out and it's like ... every time I think I get to another step, something pulls me back,.

"There's all these f****** roadblocks. I'm not, like, a pity party kind of girl, but, like, last night, I was like: 'Why the f*** is this happening?'

"I can hardly walk. I can hardly f****** sit. I don't know why I have all these back problems."

Kim revealed in November that she had failed the exam and will now have to retake it if she wants to qualify as a lawyer.

She recently told Time magazine: "I took a minute to process that, and instantly, when I got my results, I didn't feel good about it.

"I was really uncomfortable and not confident for a while. You get the results on a Friday, and I knew Sunday morning they were going to be live on the internet.

"So I wanted to mention it first and let people know that it didn't go my way. So, instantly I was like, OK, let's do this, I know what I've got to do."

Kim went on to add she felt low about failing, but she's determined to get back to work and pass the exam next time.

She said: "This really sucks because I put so much time into it, but I know what I can do better.

"I'm pretty good at taking a failure and turning it into something and I just don't have the time to dwell. You can feel sorry for yourself for a second, but I need to take that time and put it into studying more."