For the first time in 108 years, the Chicago Cubs won the World Series on Wednesday — and this celebrity kid was celebrating at just three-weeks-old!

Big Brother alum Jeff Schroeder shared a photo on Instagram of his infant son, Lawson Keith, clutching a navy blue Cubs-themed teddy bear with the caption, "Too much partying for this lil guy #worldserieschamps @cubs."

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The Illinois native, 38, welcomed his first child with wife Jordan Lloyd on Oct. 13. The duo met while filming the 11th season of the reality game show in 2009.

For more adorable photos of celebrity babies, click through the gallery below!