Kim Kardashian West Has Shed 30 Pounds of Baby Weight

Reality star is nearly halfway to her goal just weeks after giving birth to son.

The reality star, 35, who has been keeping a low profile since giving birth to son Saint West on Dec. 5, revealed on Twitter Tuesday that she is nearly half way to her goal.

She's trying to reach that goal with the help of the Atkins diet and the encouragement of her fans.

"This is going to be soooo ... hard but I can do it and I can't wait to share it all with you! #BeastMode #WhosWithMe ?!?!?!," she tweeted.

Kardashian West has wasted no time dropping the baby weight. Just 10 days after giving birth, she revealed during a live stream on her website that she had already lost 17 pounds through breastfeeding and eating a healthy diet.

At the time, she said her goal was to lose 70 pounds to reach her ideal weight of 120 -- four pounds less than she was when she got married.

Most of it was baby weight, she explained on Twitter, but not all.

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's trying to reach that goal with the help of the Atkins diet and the encouragement of her fans.

"This is going to be soooo ... hard but I can do it and I can't wait to share it all with you! #BeastMode #WhosWithMe ?!?!?!," she tweeted.