On my skin, Les Petites is dominated by a very green linden blossom from first spray to late drydown. Fortunately I'm a big fan of this wonderful note, as linden trees grow quite well in my region, and their essence perfumes the air in early summer. Dawn's linden note is true, with a light but pervasive citrus aspect from the mandarin and neroli. The mimosa note is also there, and the rose is very, very faint in the background. Les Petites doesn't really develop over time, but stays bright and fresh throughout.
One thing that sets it apart from many other linden scents is that it never veers into sweetness. Les Petites is the scent of the linden tree with tight, young green buds on a breezy June day, rather than the heavy, nectar-laden, creamy white blossoms abuzz with bees on a hot and lazy afternoon in July. I own and love Tilleul and La Chasse for the latter, but if you're looking for an unsweetened, citrussy floral, Les Petites may fit the bill nicely.
Longevity for this fragrance is surprising, especially as it was imagined originally as a children's scent. I get 6 hours easily from a single spray. I feel that the sillage is probably too powerful for a baby or small child, but this would be a lovely first scent for a young girl or boy, and it's a refreshing, cologne-like fragrance for grownups of any sex.