I really enjoyed this and understand the hype surrounding it.
At first spray, it's candied lemons, sweet and citrusy, with a bit of orange blossom. The orange blossom is white floral and slightly musky, softening the acidity of the lemon a bit. It stays this way for the first few hours of the wear.
About three hours in, the lemon starts to back down, the orange blossom gains some strength, and the vanilla begins to emerge, softly and sweetly. The orange blossom fades about seven hours in and, after this, it's just straight-up warm vanilla. This lasted about 10 hours on me before it was all but faded.
Overall, this is a great perfume for gourmand lovers and citrus enjoyers. It's sweet enough to do well in the cooler months but fresh enough to please in the warmer months as well. A wonderfully frilly, no-frills perfume.