Ever since getting involved with his now fiancé Blac Chyna, Rob Kardashian has been on a steady journey towards a healthier lifestyle and it seems his hard work is beginning to pay off.

The reality star recently showed his weight loss progress on Instagram by posting a side-by-side, before and after comparison of himself a year apart. See the pretty impressive transformation, below:

It looks like Rob is making sure he's slim and trim for his wedding day. Good for him!

Rob, 30, had gained 100 lbs. between 2014 and 2015, and was even diagnosed with diabetes. During that time, he had taken what seemed to be a lengthy sabbatical from social media and the spotlight, but it seems he is back in good graces thanks to the help of his fiancé.

See dad-to-be's surprise baby announcement with his fiancé Blac Chyna in the BET Breaks video, above.

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