cap grunge Nicole Kidman no makeupcap grunge Nicole Kidman no makeup

Nicole Kidman and Keith Urban hid their hat hair under matching black caps for a trip to the salon yesterday.

In January, we snapped the Oscar winner heading to a fertility clinic -- although were sure she wants to freshen up her color for the Academy Awards, we hope she uses an ammonia-free dye ... especially if she's in her first trimester!