Kate Middleton and Prince William's Alma Mater Celebrate Birth of Royal Baby With Sweet Flashback Photo

By

Everyone is celebrating the birth of Prince William and Kate Middleton's third child, including their alma mater!

Shortly after the Duke and Duchess of Cambridge welcomed a baby boy at the Lindo Wing of St. Mary's Hospital in London, England, on Monday, the University of St Andrews took to Twitter to congratulate the royal couple.

Sharing a pic of the lovebirds adorably dressed in matching white tops while on their campus, the university tweeted, "Baby joy for Fife graduates - #congrats to Catherine Middleton, art history Class of 2005 & William Wales, geography Class of 2005, on the birth of their 3rd child. #RoyalBaby."

William, 35, and Kate, 36, first met in 2001 while attending the university, and later tied the knot in April 2011. They share two other children, 4-year-old Prince George and 2-year-old Princess Charlotte.

As ET previously reported, Kate gave birth to a baby boy at 11:01 a.m. local time, weighing in at 8 pounds, 7 ounces.

A few hours after Kensington Palace announced the baby news, William was spotted leaving the hospital to tend to his other two children. "Back in a minute," he told onlookers. 

As we patiently wait to hear what the couple named their newborn, here's everything we already know about royal baby No. 3 so far!

RELATED CONTENT:

Kate Middleton Gives Birth to a Royal Baby Boy: Why Princess Charlotte Will Now Make History

Kate Middleton Gives Birth to Royal Baby No. 3 -- a Boy!

Kate Middleton in 'Early Stages of Labor,' Awaiting Arrival of Royal Baby No. 3 With Prince William

Related Gallery