Ivanka Trump, with baby boy Joseph Frederick after the child's bris. Photo: Ivanka Trump / Instagram.

A baby rivalry has begun in the UK between the newest heir to the throne, Prince George, whose Christening was held this week in London, and Joseph Frederick Kushner — the son of Donald Trump’s daughter, Ivanka, and New York Observer publisher and property magnate Jared Kushner — who was apparently circumcised on the same day, in New Jersey.

In a photo posted to Instagram, Ivanka, 31, a former model and now mom and entrepreneur, posed with baby Joseph Frederick, and looked stunning, readers of the UK Daily Mail wrote in to say.

“Ivanka is stunningly beautiful, has two children – and she WORKS! (Husband is good-looking too…!) Waity looks embarassing next to her,” wrote Tellitasitis, referring to the Dutchess of Cambridge, Kate Middleton, by her meida nickname, “Waity Katie,” given because Prince William had been going out with her for eight years before he finally proposed.

“Kate looked nice but Ivanka looks absolutely stunning. And enough with having a go at male circumcision. If you don’t understand,tough,” wrote Susie M., as other readers also acknowledged that while royal babies are christened, up until this past generation, which includes Prince Charles, they had also been circumcised by a “royal mohel.”

On Instagram, Ivanka wrote that her son was “named after each of our paternal grandfathers, both master builders of their generation and inspiring patriarchs of their families. Both men set the standards that have been passed down through the generations and which we hope to impart upon Joseph and Arabella,” their elder daughter. “They created a legacy for our family that inspires our careers as well as our love and respect for one another.”

Ivanka has yet to respond to The Algemeiner’s query via Twitter: was Grandpa “The Donald” given the honor of  holding baby Joseph Frederick during the bris as the baby’s Sandek?