Rapper Kanye West and his girlfriend Kim Kardashian are said by friends to be considering breaking with family tradition by christening the baby they are expecting "North".

West, 35, and his reality star girlfriend are currently sounding out names, and are understood to have come up with a list of alternatives for the baby, due in July.

North is said to be top of the list, according to friends the couple consulted last month while in Paris for the city's fashion week.

Naming the baby North would mark a departure from custom for the Kardashians, with Kim's parents favouring the letter K when naming her siblings, Kourtney and Khloé.

West, meanwhile, is said to be mulling over a choice of title for his next album, with I Am God said to be frontrunner.

A source said: "Kanye's ego is something else, so he's quite serious about the title. He also has a sense of humour though, and knows how his self-indulgence is seen by the general public.

"It's half tongue-in-cheek, half what Kanye probably feels is true."

The couple have not officially confirmed the gender of their expected child, though it is rumoured to be a boy.

The couple have enrolled in prenatal training together, according to Hollywood Life.

"Kanye is going to do everything he needs to do to make sure Kim delivers his baby," said the unnamed source. "If that means he has to go to classes and help her breathe, he's going to be there.

"If he has to hold her hand and she squeezes the hell out of it, he's going to be one hand short. If he has to cut the cord, he's going to cut it."

Actress Gwyneth Paltrow and pop singer husband Chris Martin attracted derision after opting to call their daughter Apple, while David and Victoria Beckham raised eyebrows with their choices of Romeo, Brooklyn, Harper and Cruz.