Women do have a few problems re; weapon concealment, retention(security), etc.
My main advice is to always carry on your person. Many forum members or firearm tactics instructors may advise you use a purse or bag but that can be stolen or you could be at a loss in a high stress critical incident.
There are new holsters & carry methods that provide a few choices for J frame revolvers or semi-auto compact pistols like a model 27 .40S&W pistol.
Check these sites; www.mitchrosen.com www.usgalco.com www.safariland.com www.bianchi-intl.com www.gunvideo.com www.highnoonholsters.com www.donhume.com www.galls.com www.policehq.com www.5.11tactical.com
Lenny Magill markets a few under-shirt/t-shirt styles that fit women & the site has a few bike shorts/garments with pockets for gear/small firearms.
I'd carry at least 1 reload or spare magazine too. Remember the old LE/US armed forces saying; 2 is 1 and 1 is none.
With J frame snub revolvers many gun owners & armed professionals(male & female) use Tuff Product Quik Strips or the old stand-by; the Bianchi Speed Strip. 2 strips of .38spl +P or .357magnum can fit snug in a Aloids tin.
A laser-aimer or CT lasergrip isn't a bad add-on either; www.Lasermax.com www.crimsontrace.com
As posted, dark colors, thick fabrics, and patterns-designs conceal better but due to weather or lifestyle, dress may be a issue.
I read a article years back where a gun writer compared concealing weapons to a illusionist, using colors & dress styles to avert a viewer's eyes or to be discreet.
If you can, buy a full length mirror or give your concealed carry method a quick check before you go anywhere.