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Watch out, Gwyneth Paltrow and Jay Z: There's a new gang of superfriends in town, and they're getting chummier by the minute.

According to a report in the UK's Daily Express, Kate Middleton and Victoria Beckham are quickly becoming buddies, bonding over such topics as motherhood, interior design and fashion. What's more, their husbands are becoming fast friends as well, as they reportedly "enjoy discussing sport and bonding over being dads," according to a source.

But despite knowing each other for years (the Beckhams attended the royal wedding in 2011), the two most popular couples in Britain only recently began pursuing a serious friendship after Beckham moved back to London following his retirement from professional soccer.

An insider now claims that Kate is helping Victoria design the bathroom in the Beckhams' new home, helping choose tiles and pick out Grecian statues. And once their London digs are complete, the Beckhams reportedly want to invite the royal couple over for a dinner party, where David plans to show off his cooking chops and intends to — no joke — teach William how to make sushi.

"William's keen to learn," said the insider.

As of now, not much else is known about the couples' upcoming dinner date. But if we were to venture an educated guess, the four of them will eat, then braid each other's hair, have a pillowfight, and play "Truth or Dare" until all hours of the night.