Tyra Banks is loving life as a mother. The 42-year-old former supermodel took to Instagram on Sunday to share the first photo of her and boyfriend Erik Asla's "miracle" baby York with a heartwarming message.

"This is the Happiest Valentine's Day of my life," she captioned the stunning photo of her holding her son snuggled up in a blanket against her chest. "York, Daddy @erikasla and I send you so much love."

Asla also shared the same photo, simply writing, "Mother and Son."

Banks surprised everyone last month when she revealed that she and Asla welcome a son via surrogate, as HNGN previously reported. At the time, she posted a simple photo of the baby's teeny newborn hat, thanking the "angel of a woman" that brought their "miracle baby" into the world for them. Banks, who had opened up about her fertility struggles in the past, described the birth of York as "the best present we worked so hard for."

When Banks made this joyous announcement, her former "America's Next Top Model" co-judge Nigel Barker was thrilled.

"I haven't spoken to her yet, but I'm very happy for her," he told People earlier this month during NYFW. "I know it's something she really wanted to do...When she first held my son Jack-the look in her eyes, she really wanted to be a mum. She often talked about it, so I'm really happy for her. I think she's going to be amazing."