Baby who isn't affectionate

[CASMama711]

Just wondering if other mamas here have experience with babies or toddlers who seem to be developing normally and just aren't physically affectionate. My 1-year-old DD2 doesn't hug, snuggle, or try to kiss at all. Meanwhile, her twin brother has been doing all of those things for several months. I don't think there's anything "wrong" with her. She's starting to walk, says a few words, smiles and laughs a lot, expresses excitement about things like seeing her sippy cup, our pets, her big sister, etc... she just doesn't show any physical affection at all. She doesn't mind being touched and loves when I wear her in a carrier, so I don't think it's a sensory issue. I guess I'm just disappointed. When will my baby girl hug me???