Harry, Meghan fans fume over royals’ Lilibet birthday snub: ‘F- -ked up!’

The British royal family had failed to publicly acknowledge Princess Lilibet’s second birthday — and Sussex fans are all fired up.

The princess, who is seventh in line to the throne, turned 2 on Sunday, with parents Prince Harry and Meghan Markle purportedly throwing an “all-America” party at their home in Montecito, California.

But in Britain, there was silence on the social media accounts of King Charles and of Prince William and Princess Kate, none of whom offered any sweet sentiments for the royal tot.

“That’s f- -ked up!” one Twitter user fumed over the apparent snub. “The children are innocent, they don’t have anything to do with the beef among the adults so [the royal family] gotta get off from that high horse and do what’s right!!!”

However, some Sussex supporters said it was better for the royals to remain tight-lipped.

“Best they keep her name out of their grubby mouths. I don’t want to see them generating clicks off her,” one raged.

Others claimed that they may have sent their best wishes privately.

“I bet William, Kate and Charles texted Harry with a birthday greeting yesterday for Lili,” one speculated. “Think about it … they WOULDN’T want it public with everything that’s gone on, so they kept it quiet within the family circle without the media.”

A royal source told the Sun that Charles wouldn’t be publicly wishing Princess Lili a happy birthday because “the royal family [doesn’t] mark the birthdays of non-working members.”

“They of course wish Lilibet a very happy birthday but nothing will be put out on any channels,” the source added.

But last year, Charles, William and Kate did post social media messages to mark Lili’s first birthday.

“Wishing a very happy birthday to Lilibet, turning one today!” William and Kate wrote on Twitter last year.

“Wishing Lilibet a very happy 1st birthday today!” a post from the Clarence House also read. The account was used for public communication for Charles before he became king.

It currently remains unclear whether the royals privately contacted the Sussexes for Lili’s birthday on Sunday, but relations between the family have soured since the release of Harry’s bombshell memoir, “Spare,” earlier this year.

Late last week, royal expert and journalist Jennie Bond told OK! Magazine that Harry and Markle would celebrate Lili’s birthday with a small party.

“I would expect to see a sprinkling of celebrities and a laid-back party, which hopefully will include some other toddlers,” she stated.

“It would be nice to think the day might include a video call to Lilibet’s grandfather King Charles, and hopefully some sort of gift has been arranged and will be delivered to Montecito for her birthday,” the expert added.

Harry and Markle also have a son together, Archie Harrison Mountbatten-Windsor, 4, who was born in London.

Archie was born on May 6, which happened to fall on coronation day this year, when Charles was officially crowned king after the death of his mother, Queen Elizabeth II, at 96 years old this past September.