Overdue Comparison Photo

I haven't done a comparison photo in recent months because Koen and Tavin at almost 2 really don't look as obviously alike as some of their baby pictures did from time to time. This comparison though does show that they are definitely brothers! I feel like their eye structure looks really similar here. What do you think? Koen was 21 months in the picture of him, Tavin is almost 23 months.