Earlier, the 31-year-old fashionista had weighed in on having a second baby with husband, musician John Legend in future on the 2017 SAG Awards red carpet, reported E! News.
Chrissy, however, took to Twitter to put an end to speculations.
She wrote, "Since this is coming up again, I said our next baby would be a boy because that is the embryo we have left. A boy. So. Yeah. And no, I am not pregnant."
Chrissy gave birth to the couple's nine-month-old daughter, Luna Simone Stephens, in April 2016 through IVF treatment.