1.   The Forward Point or Straight Point
The forward point collar is the most basic of all and goes well with both casuals and formals. This type of collar is pointed and is separated by a small gap cut using straight lines. It compliments all kinds of lapels and works its charm in all kinds of events- weddings, gala, office meetings.
2.   The Cutaway or Spread Collar
When you are looking for a super sophisticated and formal choice, nothing beats a cutaway or spread collar. However, one thing to always remember is that you cannot and must not go tie-less with this type of collar.
3.   The Button-Down Collar
The button-down collars are the least formal of all. These type of collars are directly connected to the shirt using two small buttons. The spread width varies so you get to choose from a great deal of variety. So, the next time you need to rock the casual look, the button-down collar is your best option.
4.   The Wing Tip Collar
The wing tip collar has proved to be the best wing man for tuxedo. It is specifically designed to carry bow ties with elegance, and hence are seen as the most formal of all type of collars.
5.   The Tab Collar
The tab collar is the smaller sibling of the forward point collar, and oozes out tradition. The main purpose of tab collar is to promote the tie knot and works best with the ‘four-in-hand’ tie knot. Again, never go tie-less with this collar.
6.   The Rounded or Club Collar
It is one of the rarest yet most classic collar types of all times. Pair it with a small horizontal metallic pin across the spread and you will get my point.
So, here you go, mate! Whatever your style is, pay a little attention to the shirt collar type you pick and see your charm increasing up to tenfold.