I hope I did this right... The one with my boy in the pic is 10 weeks and the white T-shirt one is 13 weeks. Hope yall can see it. Let me know if I messed up!
At 10 weeks- It may be hard to tell (with my big son running up to hog the picture) but I can definitely tell that there is a thickening beginning.
!3 weeks! Can you see the difference?