Amber Heard (left) and Johnny Depp Photo: IC

Johnny Depp's wife has filed for divorce, citing irreconcilable differences after 15 months of marriage to the Hollywood star, celebrity news media reported on Wednesday.

Court records published by the TMZ website show that Amber Heard submitted the petition to a court in Los Angeles on Monday seeking spousal support from the 52-year-old Pirates of the Caribbean star.

Celebrity magazine People, which said it had also obtained a copy of the petition, said 30-year-old Heard cited "irreconcilable differences."

The pair, who have no children together, have been embroiled in a spat with Australian Deputy Prime Minister Barnaby Joyce since Heard failed to declare the couple's two dogs when they arrived in Queensland state a year ago for the filming of the latest Pirates of the Caribbean installment.

Joyce, who is also the agriculture minister, threatened to have the dogs, Pistol and Boo, put down unless they "buggered off back to the United States" for breaking the country's strict quarantine laws.

Actress-model Heard last month admitted to falsifying her immigration arrivals card and was placed on a $720 one-month good-behavior bond.

The couple released an awkward video apology, after which Joyce mocked Depp for looking like "he was auditioning for the Godfather."

"In all seriousness, the one thing I will never revel in is any relationship breakdown, no matter what animosity that might be seen on the airwaves between Mr. Depp and myself," Joyce told reporters in Queensland on Wednesday when asked about the split.

AFP