Big difference in kiddo height and weight

Hey all! I’m trying not to be too too concerned or sound judgmental of my own kiddos here, so please know this is coming from a heart that cares so much for her kiddos, but she’s starting to worry… I’ve noticed that there’s a somewhat big discrepancy amongst my kiddos in weight and overall height/size. my oldest (boy, 21 months) is 31 inches tall, 23 lbs soaking wet on a good day, all toddler lol. He’s been 20-25%er pretty much his whole life so far.. My second (girl, 3 months) is 24 almost 25 inches long, pushin’ 14.5 lbs (way past where brother was at that age!), the sweetest lil punkin’ puddin’ 75%er. lol I’m just a little worried for my oldest, that sissy is gonna pass him up in every way (I know, not a bad thing!😅) My oldest has been deemed as proportionately petite, but my hubs and myself look at eachother like, huh. We’re both taller individuals( I’m 5ft 7”, he’s 6ft. 1.5”), I have always been more petite boned and my hubs is bigger boned. Neither side has shorter family members (my side did have a cousin who’s growth was stunted at a young age, and they had to give him growth hormone shots for a bit, but that was due to other issues) so we’re not worried…but we’re just a little worried?😅😅😅 does that make sense?😅 Anyone else have/started off having a bigger discrepancy in size of their kiddos? Some folks have told me not to worry already, that it’ll even out over time…I just…guh. I’m not sweatin’, but I’m just starting to get a little concerned for my oldest😅🥺💕 Outside forces have also played a bit of a factor in that I have ALSO been told, “oh wow! Your lil girl looks just as big as your older one!” Like, thanks, no thanks😅😬 Guh, am I sweatin’ for nothing?😅