I think H&M's legendary Garden Collection has been my favourite of their collections to date, followed closely by the one they just did with Lanvin. On top of the fab red rosette jacket I have, I recently got the kimono dress. It is one size too big, so I've been flashing my boobs quite a bit, but the sleeves are out of this world. I love it:
Dress, H&M Garden Collection; Purse, Xmas gift; Raybans; Havaianas courtesy of Havaianas Singapore.