I remember this! I was browsing through YouTube and stumbled on this Anna Kournikova animated breast growth morph. It uses a sports bra print ad she did.
I love tight top big tit videos, because the implication is that the girl has outgrown her clothing. About a minute in, this model comments on how the top she’s wearing makes her breasts look “massive”, but actually it’s because her breasts are massive that they look massive.