@jembang My boys are crazy tall and I've found that Burts Bees runs really long and a bit slim. They're currently wearing 6/9 m pants in BB while wearing 18m in Carter's. PJs don't have as big of a discrepancy but they still seem to run longer. I definitely recommend the footless for bed as you'll probably get more wear out of them. They also have awesome sales on Amazon you just have to keep an eye out.
@jembang My boys are built the same! 20 & 21 pounds at almost 11 months but SO tall. We really like old navy. I get 90% of their clothes there. They fit 12-18 months now so definitely size up! Carters fits a bit wide for my kiddos.
@jembang Burt’s bees baby has been the best fitting sleep and plays, especially footed. The grippers are amazing and there is elastic in the ankles to keep them from sliding down too. Other than that, we do Walmart two piece pajama sets.