See Kim Kardashian '20 Pounds Lighter'

— -- Kim Kardashian was looking at some old photos and got inspired.

"ughhh I am 20 lbs lighter here! This was just 5 years ago!" Kardashian, 33, posted next to a picture of herself on the red carpet in Las Vegas.

Looks like Kardashian will be hitting the gym even harder.

"Ok I'm going back on my grind," she wrote. "I gotta get back here!"

Read: Kim Kardashian: I Still Have Baby Weight to Lose

Kardashian already upped her game last year, dropping some major weight after giving birth to daughter North West in June. After feeling like she was back to her old self, Kardashian posted that famous white bikini butt selfie, and that was 10 months ago.

Even though she showed off her body to the world, she also revealed late last year that she still had baby weight to lose.