Heidi Klum and Babies ‘R’ Us have extended their Truly Scrumptious by Heidi Klum collection with the addition of two new t-shirts designed by Klum’s son Johan.

The two baseball-style t-shirts­–one with pink sleeves and one with blue sleeves–feature two of Johan’s hand-drawn monsters.

The tees are now available online and will roll out in Babies ‘R’ Us stores across the U.S. next week.

The t-shirts were launched in conjunction with an awareness initiative for BRU’s long-time charitable partner Save the Children, an organization that helps impoverished children across the U.S. BRU has donated $50,000 to Save the Children and is hosting a design contest to let two budding artists create t-shirts of their own.

The Project Doodle Contest challenges kids 8 and younger to create a t-shirt design that will then be featured this fall as part of the Truly Scrumptious by Heidi Klum collection.

Klum will lead a panel of judges in selecting 10 finalists, which will then be voted on by BRU costumers.

“As an organization dedicated to providing support to children in need, while inspiring kids through art, we’re thrilled to partner with Babies ‘R’ Us and Heidi on this initiative,” says Mark Shriver, senior vice president for strategic initiatives, Save the Children. “The generous donation provided in conjunction with the launch of these t-shirts and the Project Doodle Contest will help us to further our mission in assisting youth in impoverished regions throughout the United States.”