Nicole Richie & Joel Madden Twit-Pick on Each Other

From rooting for rivals to posting unflattering photos, it's all fair in love and Twitter war!

FIGHT CLUB

"LMFAO-You can't tell but me and Nicole were arguing through our teeth in this picture," revealed Madden. "Do you ever do that with your partner? Try doing it on a red carpet! I can't even remember what we were arguing about."