Teen Mom OG stars Farrah Abraham and Amber Portwood's rivalry is far from over. The 25-year-old MTV star took a shot at her co-star's hair colour and criticised her upcoming wedding with fiancé Matt Baier in an interview with InTouch Weekly.

When asked what she thought of the wedding dress Amber tried on, Abraham told the Magazine, "S**t, I must have fast forwarded right through that because I don't even know what it looks like."

The reality star went on: "I think her pink hair took away from the whole dress. It looks like a cheap h*****r. I mean if you want to get married like that – your choice then, have fun." Farrah, who is set to appear in the upcoming season of Marriage Boot Camp Reality Stars: Family Edition, also explained that she will not attend her co-star's wedding in October.

She told the magazine, "She keeps lying. They keep lying telling everyone saying that we are invited. Why the hell would I go to somebody's wedding that writes books about me? That's a freakshow. I don't speak to criminals and honestly, her and her criminal convict or whatever she is into – she can have that time in her life and I'm fine being totally separate by that."

Previously, Portwood had shared her opinion about Abraham in an interview with People magazine and claimed that Abraham, who is Sophia's mother "says things that people want to hear".

She continued, "I do not want kids today who are watching the show to think that that is a strong woman. That is not a strong woman. That is a hateful woman. That is not what you want to be like." She later revealed that Abraham and her on-again-off-again boyfriend Simon Saran "were never quite invited" to her wedding. "Who gives a s**t? Who cares?" she said. Teen Mom OG's new season airs every Monday on MTV Network.