The exciting news was confirmed by People magazine.
“Nicky is very excited to become a mum,” an insider told the publication. “She is feeling great!”
The couple tied the knot in July at Kensington Palace in one of 2015’s most lavish ceremonies.
“I highly recommend it,” the newlywed gushed to E! News in October of tying the knot. “If you find the right person, absolutely. It’s so much fun.”
Prior to the news coming out, the 32-year-old was recently spotted with her husband shopping at Pottery Barn Kids at The Grove in Los Angeles looking blissfully happy.
“They’ve just begun telling close friends and family. Nicky and James are over the moon,” the insider revealed.
No doubt big sister Paris Hilton, 34, is overjoyed about becoming an aunt.
Before Nicky’s July wedding, the former reality star gushed to People about how happy she was for her sister.
“They’re so loyal and they’re so in love. They’re like a prince and princess,” Paris quipped.
“I think it’s important to find someone you trust and love and spent the rest of your life. I think that’s the meaning of life: to get married and have a family.”