What models need to know

Days Before the shoot 

• If it's for your portfolio: Create a Pinterest board of images you like and want to show the photographer.  Share the board with the photographer
• Resist the urge to over-exercise or diet excessively, but don't eat a lot of junk food or carbs.
• Avoid breakouts by not trying any new make-up or skin care products.  Do not get a facial within 4 days of the shoot.
• Practice posing in front of a mirror

The Night Before the Photo shoot

• · Remove any body hair you do not want the camera to see.
• · Gently exfoliate your body to remove dead, scaly skin, and apply moisturizer.
• · Give yourself a manicure and a pedicure, making sure to use only a clear or pale neutral polish.

What to Pack for the Photo shoot

• Any clothes, shoes or accessories your agent, stylist or photographer asked you to bring.
• Your 'Model's Bag' (see below).

The Day of the Photo shoot

• Wear loose-fitting clothing to prevent any marks and impressions on your body.
• Wear a button front shirt to protect hair and make-up so you don't pull it over you head to remove it.
• Wear a clear deodorant to prevent white marks on the clothes.
• Discuss if a make-up artist will be on the set, if so arrive with clean hair and absolutely no make-up.

The Model's Bag: 
As a working model you should always have this especially if you are new and doing portfolio work.  
Some of this depends on if there will be a hair and MUA on set:
Hair, ask if a hair stylist will be on set:

• Headband, elastic bands, hair pins
• Brushes, combs
• Hair appliances (curling iron, rollers, straighter)  some studios have dryers (we have hair dryer and an clothes iron)

Face:

• Skin cleanser and a good moisturizer
• Make-up kit
• Cotton balls and cotton swabs
• Mirror
• Lip balm and Vaseline

Nails:

• Manicure kit
• Neutral colored polishes
• Polish remover pads

Clothing:

• Different colors of nylons/tights
• Bras of different colors and styles
• Loose socks to wear around the studio when not shooting
• Light dressing robe
• All clothes should be clean and ironed (we have an iron in the studio)

Shoes:

• Assortment of dress shoes/sandals
• Flats (brown and black)
• Plain white sneakers  

Music: 

• Bring your phone with music you would like to listen to during the shoot if it's for your portfolio/headshot. If you were hired for a commercial shoot the photographer's team will probably pick the music.

Here is a video posted by Jill Billingsley. Thanks Jill for allowing me to post this.
What to pack for a photo shoot or casting