Los Angeles-based underwear model Sarah Stage, who made noise on Instagram after posting her literally "sexy" pregnancy photos, has given birth to a big baby boy on Tuesday.

Her critics made an indifferent forecast that her baby will be abnormally small due to her pregnancy bump, which looked more like some mild bloating. Some expressed concerns and worries for the baby because of her skinny selfies, indicating that the baby might be malnourished. Others accused her of dieting to maintain her figure instead of eating for two.

However, Sarah proved them wrong, as her son James Hunter weighed in at 8 lbs., 7 oz. and was 22 inches long. Doctors confirmed that the baby was delivered properly and he is perfectly healthy.

"Yes!! Thank you! All of that is indeed true :) he's a big healthy boy and he got an APGAR score of 8-9. Thank you for supporting me throughout my pregnancy!" Sarah told E News.

Sarah managed to maintain her figure by going to the gym, even while she was pregnant. People didn't see her in maternity clothes; instead, she preferred to wear lingerie.

See more of her pregnancy photos, here.