Parents eager to dress their sons and daughters in the Kingsley brand T-shirt are now frantically searching for where it is available to buy.
The garment's designer, Kingsley Aarons, a graphic designer, said: "It just hit me how big of a deal this is."
Kingsley says he was inspired to create the T-shirt by his 2-year-old son, Zephyr, after watching the tot banging away on pots and pans in his kitchen.
However, fashion conscious parents hoping to snap up a Shiloh shirt can expect a long wait as shops have sold out of the design.
Kingsley is sold in the US at Barneys New York, Fred Segal and Bloomingdale's and prices start at around $38.
The rock'n'roll inspired brand is popular with a host of other celebrity mums and dads, including Johnny Depp, Gwen Stefani and Seal and Heidi Klum.
Kingsley has also revealed he is currently talking with Brad and Angelina's representatives to try and send a crate of his baby T-shirts to Africa to help clothe poverty-ridden newborn babies.

Meanwhile, Brad Pitt is Dad Of The Year according to a Life & Style Father's Day poll. "He even skipped the Cannes Film Festival in anticipation of Shiloh's birth," said L&S's editor in chief Debra Birnbaum.

In other news, Tom Cruise sent new parents Angelina Jolie and Brad Pitt a congratulations
card bizarrely praising them for "following in his footsteps".
The 'Mission: Impossible III' star - who celebrated the birth of his
daughter, Suri, in April - sent the happy couple a card with the message,
"Congratulations! You're doing a fine job following in my footsteps!"
written inside.

Tom - who became friends with Brad when the pair starred in 'Interview with
the Vampire' - also sent Angelina and the 'Troy' actor's daughter, Shilou
Nouvel, a designer Gund teddy bear.

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