Jackie is in a fashion show at school. For her first outfit she may choose from 3 different colored shirts, 2 pairs of pants, and 3 pairs of shoes. From how many different possible outfits of 1 shirt, 1 pair of pants, and 1 pair of shoes can Jackie choose?

Jackie can choose her shirt in 3 ways, her pants in 2 ways, and her shoes in 3 ways. By the multiplication principle, there are $3 \times 2 \times 3 = \boxed{18}$ different possible outfits.

To find the total number of different possible outfits that Jackie can choose, we need to multiply the number of options for each item of clothing:

Number of colored shirts = 3
Number of pairs of pants = 2
Number of pairs of shoes = 3

So, the total number of different possible outfits that Jackie can choose is:

3 (number of colored shirts) × 2 (number of pairs of pants) × 3 (number of pairs of shoes) = 18

Therefore, Jackie can choose from 18 different possible outfits of 1 shirt, 1 pair of pants, and 1 pair of shoes for the fashion show at school.