Ok... Let's assume this is not about my sister, but about you. Forget skintype...etc. What's everyone's fantasy make-up collection? Then we can pick and choose!
Okay

I think that I do have my fantasy makeup collection, actually.
I don't use foundation, I have pretty clear skin.
I use two concealers for my dark circles - Helena Rubinstein Magic Concealer for light coverage (on good days) and MAC Studio Finish Concealer on bad days.
The concealer brush is VERY important - right now I'm using one from Helena Rubinstein, but I am going to switch to Make Up Store.
I use Guerlain Les Meteorites powder for the face - not all over the face, just the t-zone.
I use an eyelash curler every day. I have one from Shiseido, it's pretty great.
My favourite mascara is Sky High Curves from Maybelline - it doesn't smudge, it can hold a curl and it seperates the lashes.
For eyebrows, I use hairspray to set them and an eyebrow pencil from YSL. It has the most perfect light grey colour - blondes shouldn't use brown eyebrow pencils at all.
I don't use blush every day. Sometimes I use powder blush from MAC in Coygirl - it's great for contouring and it also gives a nice glow.
Sometimes I use Tinted Glow Enhancer from The Body Shop. It's nice and subtle.
For eyeliner (I don't use it very often) I have Terracotta Loose Powder Khol from Guerlain in brown. It takes some getting used to, but it's very subtle.
I'm thinking of buying Sculpt and Shape powder from MAC. The highlighting part isn't very shimmer-y, more like a beauty powder. I'm really not much of a shimmer person these days.