There are many instances and characters in Legally Blonde that just about anyone can relate to. You could be like Elle who has a difficult time being taken seriously, like Paulette who doubts in herself that she could win the heart of the hot UPS guy, or like Vivian who has a difficult time making friends.
What we've learned from these different characters is that we can't always judge people on what they appear to be. For instance, Elle and Vivian both judged each other at the beginning. But once they understood their individual motives, they became friends.
Understandably, not every personality meshes to form a friendship. But we should at least be able to handle being around people who are different from us, right?