WATCH: Prince William welcomes Prince Harry “into the sleep deprivation society that is parenting”

Prince William offered a realistic welcome to his brother, new dad Prince Harry, who welcome his first child with Meghan Markle on Monday.

Speaking at Meghan and Harry’s introduction of their son, William welcomed his brother to “the sleep deprivation society that is parenting”.

“We are obviously thrilled, absolutely thrilled,” William said with Kate Middleton by his side.

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"I'm very pleased and glad to welcome my own brother into the sleep deprivation society that is parenting." Prince William gives younger brother Prince Harry a realistic welcome to fatherhood. #princewilliam #katemiddleton #dukeofcambridge #duchessofcambridge #royalfamily #britishmonarchy #royalbaby

A post shared by ABC News (@abcnews) on May 8, 2019 at 3:47am PDT