I am a citrus lover and I am a fan of Guerlain so I came to this scent with high expectations. Perhaps too high.
The lemon note is a bit muted and not quite as juicy as the box/packaging picture might imply. Sort of a muted, non-pareil lemon-after-dinner-mint kind of lemon. After this dries down, the sweetness is amplified by a fruit note (pear?) that tends to animate the citrus and (at least to me) smell like something young girls spray on at Sephora with abandon.
It doesn't really transition much from there, since AALF is a very linear scent. It is not entirely surprising as many of the AA are structured this way, but it is no excuse for a Guerlain release that smells wholly unoriginal, uncreative and a bit cheap.