Not only did she mark the milestone with that ring from now-fiancé Kanye West, but she also belatedly celebrated Friday with friends and family in Las Vegas.
"I feel amazing," she said when congratulated on her engagement. "It is such a good feeling – just a dream come true."
The freshly engaged Kardashian, who turned 33 on Oct. 21, flocked to one of her favorite spots, TAO at The Venetian, for the bash, where she was joined by West, mom Kris Jenner, sisters Kourtney and Khloé Kardashian, as well as Scott Disick, Naya Rivera, Tyga, Blac Chyna, Jonathan Cheban, Simon Huck and Robin Antin.
And she was dressed for the occasion. Just less than a week after West popped the question at San Francisco's AT&T Park, the reality star accessorized her new bling with a white corset-style dress that left little of her post-baby body to the imagination.
Not that she's been shy about showing off her hard work.
Denise Truscello / WireImage
Denise Truscello / Getty
Before the birthday bash came to a close, Kardashian took the mic for a shout-out her guests.
Earlier in the night, she hit her fiancé's "Yeezus Tour" stop at the MGM Grand Garden Arena.