These are the hot curlers I use to get curl and body in all types of hair.

Conair Ion Shine Instant Heat Hair Setter Quick to heat and gentle on your hair, these hot rollers make it easy to curl hair every day. Rollers heat up in just two minutes.

• For more body and control, spray the base of each section of hair before inserting the roller.
  
• Leave the rollers in the hair for 5 to 15 minutes.
  
• For "loopy" curls, comb the hair only with your fingers or a large plastic pic.
• Brush with a hair brush to take out some curl and just have body.

For Any Rollers
Lots of small rollers will give more curl and more fullness.
Lots of large rollers will give more fullness.
A few large rollers will give some fullness and shape

Use small hot rollers for this a curly look updo. Directions are here.
Curly Look Updo