Is Blac Chyna a Kardashian now? Rob calls fiancee 'my beautiful wife'

Seems like TV personality Rob Kardashian is swelling with love these days. The former Keeping Up With The Kardashian star proposed to his girlfriend Blac Chyna with a seven carat diamond engagement ring a couple of weeks ago. And now, the younger brother of Kim, Kourtney and Khloe Kardashian has gone over the top by showering his lady love with an expensive gift – a brand new Huracan Lamborghini that costs a whopping $200,000.

Within hours of gifting his fiancé the luxurious custom painted purple Lamborghini, Rob sparked another row of speculation on the internet regarding his relationship with Chyna. The 29-year-old took to Instagram to celebrate the special day and posted an adorable picture of his fiancée and captioned it: "My Beautiful Wife." No wonder fans went into a frenzy following the extravagant gift and the adorable "wife" reference.

Some even thought that the two eloped and secretly got married – not an unimaginable situation considering the couple is just back from their trip to New York.

While the Kardashian-Chyna story unfolds further, Rob seems to have rubbed his sisters – Khloe Kardashian and Kylie Jenner – the wrong way. Koko and Kye are apparently disgusted with their brother's unwise choices, especially with him splurging on the 27-year-old stripper-turned-model.

"Khloe and Kylie are both so disgusted by this [Rob's gesture], they think Rob is getting totally played," a source told Hollywood Life. The sisters see this as a copycat act and Chyna's way of getting back at Kylie [they both dated Tyga]. However, they are more worried about her bleak past.

"They know Blac Chyna used to be a stripper and they feel like she's running a stripper game on Rob," the source added.