"The Lamas-Richie family is happy, healthy and definitely pregnant," she tweeted on Tuesday.
Lamas, the 24-year-old daughter of actor Lorenzo Lamas, married Nik Richie, the co-founder of celebrity site TheDirty.com, last April. The two wed at the Little White Wedding Chapel in Las Vegas within hours of meeting one another.
The reality star was previously engaged to Matt Grant. The Brit gave Lamas his final rose on Season 12 of The Bachelor, but the two broke up a few months after the finale.