The Keeping Up with the Kardashians mainstay, 33, was joined by friends and family, including mom Kris Jenner and sisters Khloé Kardashian and Kylie Jenner, at the Peninsula Hotel in Beverly Hills.
The bride-to-be made a glamorous entrance as she arrived at the hotel, decked out, fittingly, in a white minidress with pearl straps as she rocked silver stilettos.
The parents to baby daughter North – who will play an important role of her own during the big day – got engaged in October with an over-the-top proposal in San Francisco.
Even before Kardashian's monumental month of May began, she expressed her joy about the upcoming time.
"I'm just really excited for this year," she recently told PEOPLE. "So many exciting things are happening in my life, and I feel so much good energy. It's just going to be the best!"