Calling all beauty addicts! Our annual Beauty Black Book is out now, packed with only the very best InStyle-approved spas and salons around the country. This year we're helping you save on our favorite services with exclusive discounts at all the salons and spas included in the list. In addition, we've also partnered with Groupon to bring you even more ridiculously amazing discounts at a handful locations that have been honored in years past. Six of our 2009 Beauty Black Book winners are offering half-off covetable services like sunless tanning, Keratin hair treatments and mani/pedi's. If you live in Los Angeles, Atlanta, Boston, Philadelphia, Houston or Dallas, make sure to click through for all of the details and treat yourself to something special...at half the price!