1. In accord with the most fashionable ideas or style
   "a with-it boutique"
   - up-to-date, cutting-edge, nouveau 
2. Having the shrewd resourcefulness needed to survive in an urban environment
   - streetwise, street smart

See also: fashionable, smart, stylish

• keep off
• keep on
• keep one's distance
• keep one's eyes off
• keep one's eyes open
• keep one's eyes peeled
• keep one's eyes skinned
• keep one's hands off
• keep one's mouth shut
• keep one's nose to the grindstone
• keep one's shoulder to the wheel
• keep open
• keep out
• keep pace
• keep quiet
• keep step
• keep tabs on
• keep to oneself
• keep track
• keep up
• keep your shirt on
• keeper
• keeping
• keepnet
• keepsake