Today Sebastian is 20 weeks old. 20 weeks is also 1/2 of the time he was inside his mom’s belly, and 20 weeks is typically the point during the pregnancy in which you find out the gender of the baby. He’s grown a lot in 20 weeks. How many times can I say 20 weeks in this post? One more time (20 weeks). I took this photo of him this morning. He’s wearing a 100% Pima Cotton, Peruvian-made ensemble by Feather Baby. The outfit was purchased at Popo in Green Hills by his Aunt Pat last Easter.