J-Lo, Beyonce, Jessica Alba and Tyra Banks have all worn Lace front wigs.  Lace front wigs or full lace wigs have a stripe of lace around the edges and the hair is fused into the lace.  The lace is the colour of the skin and is fused onto the head with a snug fit.  The hair appears to come directly out of the wig and you can’t tell the person is wearing a wig.  Such a wig was initially designed for women who have had chemotherapy or who have alopecia (hair loss) due to other reasons, such as alopecia areata or alopecia totalis (total hair loss due to autoimmune reasons).  The downside of this type of wig is that they are very pricey—from $300 to $1500) depending on the styling and the number of hairs used to make the wig.  You can find fairly affordable wigs on the Internet.  Follow the Wigs Guide on the website for sizing and you have the perfect wig in just a few weeks. 
In order to put on a lace front wig, you have to cover your make immovable your regular hair with bobby pins or a bald cap to keep the hair flat.  You then apply the wig from front to back, taking care to keep your real hairline invisible.  You work your way back so that there are no bubbles where the wig doesn’t stick right and work your way to the back.  Now, check to make sure none of your original air shows and that the lace is straight and not bunched up anywhere.  Then style the wig on your head, curling it and combing it to your desiring. 

Lace front wigs come in a French-style or Swiss style lace.  You will require to delicately cut the lace off the wig so it sits flush with the scalp.  Cut the excess lace off so it looks like a natural hairline, being careful not to cut the hair on the wig.