Amber Rose is very proud of her post-baby bod -- and she should be!

The 30 year old and rapper Wiz Khalifa welcomed their first child together, son Sebastian, back in February ... and Rose has been documenting her weight loss since giving birth on her Instagram page.

And it seems like she reached her goal weight!

"Before & After my baby boy Sebastian," she posted online over the weekend.

In the before pic, Amber can be seen showing off her BIG bump in a sweatshirt and black leggings -- and the after, she's sporting a super tight gray leotard, looking incredible.  

Just last month, Rose spoke out about celebs who bounce back immediately after giving birth -- saying they give real people "false hope."

"Absolutely no surgery just diet & exercise," she said of her weight loss. "Most celebs give u false hope when u have a baby ( My son was 9lbs) and in 3 months ur supposed to be skinny again..... It's not realistic in most cases."

"It takes 6 weeks to heal before u could even work out. Anyway, the moral of the story is losing baby weight the natural way takes longer but it's much healthier for ur body and helps u stay strong to carry another baby," she continues. "So don't put ur life at risk for societies standards of when ur suppose to lose ur pregnancy weight. Take ur time & don't take the easy way out."

Check out more stars who dropped the weight after giving birth in the gallery above. 

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