Christian got a haircut yesterday afternoon. If the hsir stylists charged $18 and Christian gave a $20 tip, how much did he pay for the haircut? $3.60. $14.40. $21.60. $22.60.

Christian paid $18 for the haircut and gave a $20 tip, so he paid a total of $18 + $20 = $<<18+20=38>>38.

Therefore, he paid $38 for the haircut. Answer: \boxed{38}.