eeep! what to wear on Monday?

I start my new "placement" (un-paid job/work experience/internship) on Monday 
I need to decide what to wear! 

I'm pretty sure I want to give of the I'm quirky, cute and professional vibe...

too sexy/corporate?
Dress: Max tweed 
Jacket: Portmans short sleeve blazer 
Shoes: Shoe Connection Nude Heels
Necklace: Equip or Diva
Ring: Silver Moon
Bracelet: Max

I was thinking perhaps this dress with a simple (yet bright) cardigan?