"Nicky is very excited to become a mom," an insider told the publication of her happy news. "She is feeling great!"
In August 2014, the heiress announced her engagement to Rothschild, after saying "yes" to the banker on a Parisian getaway.
"They went on a romantic anniversary trip over the weekend," a source previously revealed told Radar of their engagement. "He took her out on a boat into the middle of Lake Como and he proposed, got down on one knee and everything. It was incredibly romantic and beautiful."
Though the couple has only informed close friends and family of their pregnancy thus far, they haven't exactly gone out of their way to hide the happy secret. In the last few weeks, the pair has been spotted shopping in Los Angeles at stores like the Pottery Barn Kids.
But will Nicky's exciting news cause more family drama?
As Radar previously reported, an all-out war broke out between Hilton's mother Kathy and her sister Kyle Richards during Nicky's summer nuptials. The vicious battle all started when Richards' husband wasn't invited to the wedding.
After a rocky holiday season and continuous feuding between sisters, it's very possible Nicky's baby shower will be yet another drama-fest.
In any case, congratulations to the happy couple on their growing family!