There are no real "do's or don'ts" with clothing, as most choices are more a matter of comfort. Unless you chose to tell people, your ostomy appliance will likely not be obvious under your clothing. Concealment of an appliance is somewhat dependent upon the type of appliance worn (a one-piece versus a two-piece) and the location on the abdomen.
In general, patterned fabrics tend to conceal the appliance more easily than solid colors. The choice of underwear is again a matter of personal preference. Some people prefer loose underwear while others want more support and may chose a lycra pant/brief; some may want the pouch covered with underwear, while others prefer to wear a low cut pant/brief. It is often a matter of experimenting to determine what works for you. Check with your ET (Enterostomal Therapy) nurse or local chapter of the United Ostomy Association to see if there are specialty shops or resources in your area for specialty clothes and underwear.
There are no real "do's or don'ts" with clothing, as most choices are more a matter of comfort. Unless you chose to tell people, your ostomy appliance will likely not be obvious under your clothing. Concealment of an appliance is somewhat dependent upon the type of appliance worn (a one-piece versus a two-piece) and the location on the abdomen. 
