Steven Tyler's sexual abuse accuser has been banned from discussing a number of details about their relationship in their upcoing trial.

The Aerosmith frontman is the subject of legal action from Julia Misley, who is also known as Julia Holcomb, after she claimed he sexually abused her when she was a teenager and he was an adult, while he has denied wrongdoing and insisted their relationship was consensual.

A number of claims in the suit were dismissed earlier this year and ahead of a trial due to begin on 21 September, Steven has scored a legal victory after a Los Angeles Superior Court sided with him on a number of issues.

According to TMZ, at a recent hearing, the judge denied Julia's attempt to excluse any evidence she consented to their relationship in the 1970s, and also ruled she cannot talk about a relationship she had while dating the Crazy singer and any alleged sexual assault after the age of 18.

She is, however, allowed to present of drug and alcohol consumption but cannot describe the 78-year-old rocker as a sex trafficker or equate what happened between them with the Holocaust.

Julia had alleged Steven had "groomed" and "manipulated" her when she was a teenager, and essentially admitted his actions by referring to her as his almost "teen bride" in his memoir Does the Noise in My Head Bother You?.

But in April, much of the long-delayed lawsuit was barred by the statute of limitations in Massachusetts, where Julia and Steven lived during their three-year relationship.

However, because such limits don't apply due to a special rule in California, the judge ruled she can sue over an alleged sexual encounter during a brief trip to the state, but dismissed the rest of the lawsuit.

Steven's lawyer hailed the ruling a "massive win".

David Long-Daniels said in a statement: "This is a massive win for Steven Tyler.

"Today, the Court has dismissed with prejudice 99.9% of the claims against Mr. Tyler in this case. The court has decided that only one night, fifty-plus years ago, out of a three year relationship is allowed to remain. We look forward to trying this case on August 31."

Julia first sued Steven in 2022, claiming she was the unnamed teenager referenced in his book and alleged he had used his fame to take control of her life, even signing an agreement with her parents to take legal guardianship, and sexually assaulted her for three years from 1973, when she was just 16 years old.

The 78-year-old rocker's lawyers had insisted they had a consensual "romantic relationship", and argued it was legal under the age of consent, which the judge ruled was likely true when it came to Massachusetts, where the legal age is 16, but even if Julia's allegations were valid, the case had been filed too late.

She wrote: "Plaintiff's suit was filed more than 35 years after the alleged acts and more than 35 years after she turned 18.

"To be timely, this suit must have been filed within seven years.

"The parties travelled to California on one occasion and engaged in sexual relations here during that trip. The age of consent in California is, and was at all relevant times, 18. Thus, it was against the law for plaintiff and defendant to engage in sexual relations with each other in California because plaintiff was legally incapable of consenting."

Citing the same statute of limitations reasons, accusations relating to alleged incidents in Washington and Oregon were also dismissed.