Kylie Minogue has branded Kylie Jenner a "secondary" star.

The Wow hitmaker has enlisted Australian-based KDB to file an opposition to the reality star's application to trademark their shared first name, on the grounds it could cause confusion for fans and also dilute the Minogue brand.

In the documents, Kylie is described as a "supporting character" in the family television show, Keeping Up With the Kardashians, and criticised for her "photographic exhibitionism" on social media which have brought about criticism from disability rights groups and African-American communities.

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They state: "Ms. Jenner is a secondary reality television personality who appeared on the television series Keeping Up With the Kardashians as a supporting character, to Ms. Jenner's halfsisters, Kim, Khloe, and Kourtney Kardashian (i.e., the Kardashians).

"Ms. Jenner is active on social media where her photographic exhibitionism and controversial posts have drawn criticism from, e.g., the Disability Rights and African-American communities."

The Australian pop star is described as an "internationally renowned performing artist, humanitarian, and breast cancer activist" in the documents of opposition.

Minogue, 47, already owns the trademarks for the terms Kylie Minogue darling, Lucky - the Kylie Minogue musical and Kylie Minogue.

It was previously revealed Kylie, 18, wanted to trademark her name for "entertainment in the nature of providing information by means of a global computer network in the fields of entertainment, fashion and pop culture."

The teenager was also claiming the name for personal appearances "by a celebrity, actress and model," and could prosecute other stars using her first name if it becomes a source of confusion.

- Bang! showbiz