Noah Cyrus seemingly responds for the first time about 'love triangle' with mom Tish and husband Dominic Purcell

Noah Cyrus has hit back at rumors surrounding her alleged past relationship with mom Tish's new husband, Dominic Purcell.

The rumor mill first got going back in March earlier this year, with sources coming forward alleging Noah Cyrus had 'a friends with benefits' relationship with Prison Break star, Dominic Purcell, prior to him beginning to date - and later marrying - her mom, Tish.

The alleged insider told PEOPLE Noah and Purcell had been seeing each other 'off and on', and when they 'stopped seeing each other' Tish then 'started something up' with the actor.

Tish and Purcell then ended up getting married in August last year and the speculation only intensified when Noah appeared to not attend Purcell and Tish's wedding, although another source told Entertainment Tonight that, while the reports about Noah and Dominic's relationship had been 'exaggerated', it had caused a rift between her and her mom.

After news broke Purcell had allegedly had a relationship with 24-year-old Noah, Tish and Purcell are also reported as having sought therapy.

Purcell seemingly took aim against the allegations in a post to Instagram, writing: "You don’t sign up for nonsense it just follows you. I sit quietly and observe without response nor interest."

And Noah has since taken aim at a troll who brought up the drama on her social media.

Tish Cyrus and Dominic Purcell got married last year (Instagram/ @tishcyruspurcell)

Noah took to her Instagram on Saturday (27 April) to share several photographs of herself at Coachella music festival, alongside several snaps with her fiancé, Pinkus.

She captioned the image: "Dear lord, when i get i heaven please let me bring my man."

The line is a quote from Lana Del Ray's song 'Young and Beautiful'.

Alas, rather than letting Noah simply move on with her life, one follower couldn't help but take to the comments to mention her mom and step-dad and the alleged triangle.

Noah posted pictures from her time at Coachella (Instagram/ @noahcyrus)

They wrote: "'Like that guy u and ur mom both have sexy time with?"

And taking no prisoners, Noah quickly fired back: "Hey real grandma , i’m so sorry but will you pleeeeeass just choke on the fattest c**k. just for a lil bit. great thanks."

And it's not taken long for others to flood to the comments to defend Noah.

One Instagram user wrote: "How do you make a comment on something you don't even know is true!"

"You have one of the worst structured troll comments I have ever seen," another added.