Samantha Ronson and Cadillac
04/11/2011 AT 04:50 PM EDT
It's a scary picture: Samantha Ronson's face banged up and her lip split after a bike accident on Saturday.
The DJ, 33, posted the photo
on Monday as a warning: "Wear a helmet kids!!!"
"You should see what I looked like on Saturday," she tells a Twitter follower.
She adds with a smiley face emoticon: "Just a little uglier than usual. Other than that, Vicodin is handling the rest."