Rob, 29, took to Instagram to share a couple of adoring pictures of his wife-to-be enjoying their dinner together.
In the first picture, Chyna, 28, smiles sweetly and looks to the side, holding one hand up to her face and showing off her sparkly engagement ring.
In the next snap, the expectant reality star leans back in her chair, putting her baby belly on full display.
Rob proposed to Chyna in April — just 10 weeks after the couple went public with their relationship. The two are expecting their first child together, a girl, sometime this month. Chyna is already mother to son King Cairo, 4, whom she shares with ex Tyga.
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While Chyna previously had a strained relationship with Rob’s family, they have since turned over a new leaf and sister Khloé Kardashian recently opened up about welcoming the new addition to the family.
“Chyna keeps going, ‘Are you ready? Are you so excited? We’re having a baby!’ ” continued Khloé. “But ‘we’ meaning her and I. I kept laughing it off, and now I’m beginning to think she’s really serious. Like, it’s really her and I having a baby!’ ”
Keeping Up with the Kardashians airs Sundays (9 p.m. ET) on E!