Caitlyn Jenner has sparked a rift with her new transgender friends – after she revealed her past opposition to same-sex marriage.

The first season of Jenner’s reality show I Am Cait! featured a number of the former Olympian’s transgender friends.

However, a trailer for the upcoming second season reveals that Jenner’s conservative views have caused fiery conflicts with many of her friends.

The issue first came up on the Ellen DeGeneres Show last year – where Jenner admitted that she used to oppose equal marriage, before publicly coming out as transgender.

Explaining that she had changed her mind on the issue, she said: “If the word ‘marriage’ is really, really that important to you, I can go with it.”

However, Ellen DeGeneres appeared to have been taken aback by the answer – later telling SiriusXM host Howard Stern: “She said ‘if the word marriage is that important’ …and I was like, ‘it is, because that’s the word!’. We want the same thing as everybody.”

The new I Am Cait trailer suggests the comments did not go down well with many of Jenner’s new friends either – with Jenny Boylan challenging her.

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Boylan explains: “I was a little bit hurt by your lukewarm support for same-sex marriage.”

Jenner tried to explain: “I didn’t explain it as well as I should have, but I had like 30 seconds to think about it.”

However, Boylan warns: “I hope you will recognise – you’re a leader.”

Elsewhere, Jenner is seen having a heated argument on her tour bus with a number of other friends on the issue, insisting “Barack Obama was against gay marriage, Hillary Clinton was against gay marriage.”

One shouts back: “But they changed their minds!”

Some of Jenner’s friends are then shown to have walked away from the argument.

The season is also likely to deal with other controversies stemming from Jenner’s views.

The reality star came under fire last month for praying with a Houston pastor whose group aired a shocking ad depicting a little girl getting raped in a bid to stop an LGBT rights law.

The pair’s meeting was filmed for the show – though it is absent from the trailer.

In another incident in December, Jenner apologised after she said of other trans women: “If you’re out there and, to be honest with you, if you look like a man in a dress, it makes people uncomfortable.”

Many other trans women pointed out they did not have the benefit of Jenner’s vast wealth and extensive medical procedures to help them transition.