Multiple outlets reported that the former tennis star gave birth to a boy, Nicholas, and a girl, Lucy, in Miami on Saturday, after managing to keep the pregnancy private for the entire nine months.
Kournikova was never photographed showing a baby bump, and even her latest Instagram photos never showed signs that the 36-year-old was expecting.
Iglesias or Kournikova have not released statements confirming the news, and on Iglesias's Twitter account it's business as usual as he continues to promote his world tour. However, they've always kept a pretty low profile, so the lack of a major announcement is not unusual.
The happy couple are not married, but have been dating for 16 years after meeting in 2001 on set of Iglesias's "Escape" music video. Check it out below for a walk down memory lane.
In 2013, rumours surfaced that they had briefly split over disputes about a proposal, but both denied the reports. Iglesias told E! Online in 2016 that marriage did not define their relationship. He also didn't rule it out altogether, though.
"I don't believe you need a piece of paper to show you love someone," he said. "Who knows what the future holds...or the past...haha."
This article originally appeared on elle.com