No a standard 14g piercing will do the trick.
For a standard nostril piercing, 18 g.
The standard size for naval piercing is 14g with a 7/16", 5/8", or 3/8" length.
18g is the standard nostril piercing gauge. 20g is too fine and too much like wearing a knife in your piercing should it get caught or snagged.
Depending on the place where you get it done & the standard jewellery they have. It's usually a 14g or a 16g.
If it's a vertical Labret piercing then it's a curved barbell, if it's a standard lip piercing it can be a labret stud or a ring.
The standard starter size for a septum piercing is 14g.
There is no "regular size" for a lip piercing each piercing is of varying size depending on the client. The jewellery is measured to fit that client's piercing. The standard gauges are 16g for women and 14g for men but as for diameter it's all dependant on the client's piercing.
No, they are not for sale to minors. A standard bevelled piercing needle is a modified hypodermic needle, minus its coupling attachment, and it is for this reason that they are not to be sold to minors.
Nipple piercings are straight piercings regardless of what jewellery is in the piercing when it was first done, the barbell allows the piercing to discharge and affords room for cleaning better than a ring does. Don't let anyone tell you that if the piercing is done with a curved needle the piercing is curved, that a line of BS. Once the piercing is healed you can change over to what is called a "D" ring this ring has a straight section that goes through the piercing and is by far more comfortable than a standard ring. It has the appearance of a ring but the straight segment allows the ring to be moved without twisting a curvature in the piercing like you would with a standard ring. Ultimately for day to day wear the barbell is going to be your jewelery of choice, for comfort and discretion.
I do believe it is piercing the Clitoris. There are dozens of made up names for standard piercings, this is one of those made up names. Check what piercings you are after by searching reputable body piercing sites. Professional body piercers call piercings by there original names not by some made up name .
A standard Prince Albert pierces the urethra under the glans of the penis. Jewelry commonly travels through the urethra and out the end of the urethra at the tip of the penis, and is generally a ring or curved barbell. There is also a reverse PA which is a deep tissue piercing through the back of the penis head and into the urethra.