People had already speculated the pregnancy of the Pretty Little Liars star, 32, in late May after she and the Suits actor were spotted on the beach in Mykonos. The actress covered her tiny baby bump in a chocolate brown one-piece while playing through the water with her husband.
Since then, Troian has shied away from sharing photos of her belly on social media.
Days before their beach appearance, Patrick and his wife of two years attended his Suits co-star Meghan Markle's royal wedding to Prince Harry at St George’s Chapel at Windsor Castle on Saturday, May 19.
For the ceremony, the mom-to-be was dressed in a blush Sophia Webster dress and lace veil.
The couple first met in 2009 while starring in a play and eventually started dating. In 2014, they became engaged and after two years of engagement, the duo got married in a glamping-themed wedding ceremony in Southern California in December 2016.