Kim Kardashian attends the LACMA Art + Film Gala in 2015. Credit: Jon Kopaloff/FilmMagic

Mothers of newborns don’t get much rest to begin with, but now Kim Kardashian has put some extra pressure on herself to shed all of her baby weight. The reality star, 35, welcomed her baby son, Saint West, in early December, and on Tuesday, January 19, she revealed on Twitter that she’s already lost a significant amount of her baby weight.

“I’m so excited! I'm 30 lbs down today but 40 to go! I'm so focused,” she began. “I will show u guys my workouts on my app & share my Atkins plan too!”

Noting that she gained 60 pounds during her pregnancy with Saint, Kardashian went on to explain why she had a goal of losing 70 pounds total.

“I gained 60lbs during my pregnancy but have been an extra 10 lbs up for the last few years so it's time to really get to my goal,” she continued. “This is going to be soooo f--king hard but I can do it and I can't wait to share it all with you! #BeastMode #WhosWithMe ?!?!?!”

Kardashian and her husband, Kanye West, welcomed their daughter, North, in June 2013. Already Nori is taking her older sister duties very seriously.

In early January, the mother of two shared a sweet photo of little Saint, holding his sister’s finger with his hand.

She said, "He's my best friend."

A photo posted by Kim Kardashian West (@kimkardashian) on

“She said, ‘He's my best friend,’” the proud mom captioned the pic.

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