Posted on Tue Oct 5th, 2010 4:00pm PDT
Katherine Heigl would not approve!
Oil heir Brandon Davis was caught puffing away in his Mercedes while cruising through Beverly Hills on Monday... and we snapped a similar pic of former O.C. beauty Mischa Barton - Brandon's ex - smoking a cig in her convertible just under a month ago.
Even though they're not dating anymore, they could at least be smoking buddies! SO hot right now.
SEE THE GALLERY Brandon Davis Puffs Away
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