Umrah for Women

Ihram dress
Women wear ordinary modest clothing and uncover the face and hands in Ihram: no niqab and no gloves, though a cloth may be held in front of the face when non-mahram men pass, according to many scholars.
Menstruation
A menstruating woman cannot perform Tawaf; she may enter Ihram. Most scholars say she waits until she is pure, then does Tawaf and Sa'i. If waiting is truly impossible, recognised minority opinions exist, so ask a qualified scholar before travelling or as soon as it happens. Do not delay your period with medicine without medical advice.
Companions
Many scholars require a mahram; rules and exceptions for groups differ by scholarly view and by official regulations, so check both.
Practical
Women do not jog in Sa'i nor do raml in Tawaf. Trim a fingertip's length of hair. Use designated women's areas, carry sanitary supplies and wear comfortable footwear.