When it comes to children's wedding attire, there are a few key factors to consider:

Comfort: It's important to choose a dress or outfit that is comfortable for the child to wear, especially if they will be standing or sitting for long periods of time.
Age-appropriate: It's important to choose an outfit that is age-appropriate for the child. For very young children, a simple dress or outfit in a neutral color may be best. For older children, a more formal outfit such as a suit or tuxedo may be more appropriate.
Style: Consider the style of the wedding when choosing a dress or outfit for the child. If the wedding is formal, a more formal outfit may be appropriate. If the wedding is more casual, a less formal outfit may be more suitable.
Matching styles with parents: you can consider getting dad and son matching style or color of clothes. The same is with girls and moms. If you can't find matching clothes for all of you it is best that parents buy their dresses. And for kids you can order custom made with brands like LABI.

Some options for children's wedding attire include:

Dresses or gowns: For girls, a simple, elegant dress or gown in a neutral color such as white, ivory, or light pink may be a good choice.
Suits or tuxedos: For boys, a suit or tuxedo in a neutral color such as black or gray may be a good choice.
Flower girl dresses: For very young girls, a flower girl dress may be a suitable option. These dresses are usually more casual and can be made in a variety of colors and styles.

It's also important to consider the comfort and preferences of the child when choosing their wedding attire. If the child is not comfortable in a dress or suit, it may be best to choose a different option that they are more comfortable in.

Should we have backup dresses for children at weddings?

It can be a good idea to have a backup dress or outfit for children at a wedding, especially if the wedding is being held outdoors or in a location where spills or accidents may occur. Having a backup dress or outfit can also be helpful in case the child's clothing becomes wrinkled or soiled during the wedding.

It's a good idea to choose a backup dress or outfit that is similar in style and formality to the child's original attire, so that it will blend in well with the rest of the wedding party. You may also want to consider having a backup dress or outfit that is in a different size, in case the child has a growth spurt or gains weight between the time the original dress or outfit is purchased and the wedding takes place.

If you do decide to have a backup dress or outfit for the child, it's a good idea to keep it in a safe, easily accessible location so that it can be quickly retrieved if needed. When it is time for family photos and your kid is green on his knees you should have a backup close enough that you will be ready in time for family photoshoot.

You may also want to bring along a few extra accessories, such as shoes, socks, or ties, in case they are needed as well.