One option is to buy the right gear. :-) I picked up a TC-Helicon "Voice Live" vocal processor and am pretty stoked with it. No I don't sell them. A bit spendy. Real-time variable pitch correction, compressor, eq, standard fx like verb, delay, etc. plus an intelligent programmable harmonizer. It won't make a bad voice sound good but it'll make a decent voice sound better, a good voice sound great and a great voice sound stunning. Better living through technology!
I don't find her voice that particular though. I lover her side project Frou Frou but that's more from a musical point of view. I like their 80s synth pop flick blending more pop-alike music with electronica and other influences.
took 6 years of piano lessons, played trumpet in concert band from 5th-11th grade, and started to learn to produce music in FLStudio around 2001. And I'm not sure if anyone would count this as an instrument, but I started DJing with mp3s and creating mixes in AtomixMP3 around 2004.
Guitar, vocals, 6 string fretless bass, djembe & percussion, a bit of mandolin & dobro, enough keys to lay down pads & simple parts on our recordings. These days am also very into programming with Ableton Live, Propellerhead Reason and I still use Sonar for more traditional linear recording. Hell, even a good drum circle can be a lot of fun!