
Princess Isabella of Denmark and Princess Josephine of Denmark.Margrethe II of Denmark, Princess Benedikte of Denmark, Anne-Marie of Greece, royalty.Princess Alexandra, 2nd Duchess of Fife and Princess Maud, Countess of Southesk, royalty.Elizabeth II and Princess Margaret, Countess of Snowdon, royalty.Caroline, Princess of Hanover and Princess Stéphanie of Monaco.Princess Margaret of Connaught and Princess Patricia of Connaught, royalty.Louise, Princess Royal, Princess Victoria and Maud of Wales.Victoria, Princess Royal, Princess Alice, Princess Helena, Princess Louise, Duchess of Argyll, and Beatrice, Princess Henry of Battenberg, royalty.Princess Feodora of Leiningen and Queen Victoria, royalty.Princess Augusta of Great Britain, Princess Elizabeth, Princess Louisa, and Caroline Matilda of Great Britain.Mary I of England and Elizabeth I of England, royalty.Awan and Azura, daughters of Adam and Eve.Some studies have shown that men without sisters are more likely to be ineffectual at courtship and romantic relationships. Some studies also found a correlation between having an older sister and constructive discussions about safe sexual practices. The most common recreational activity between older brother/younger sister pairs is art drawing. A younger sister is less likely to be scolded by older siblings than a younger brother. Boys with older sisters were less likely to be delinquent or have emotional and behavioral disorders. The reverse is true for young boys with several sisters, as they tend to be feminine, however, they outgrow this by the time they approach pubescence. Boys with only an older sister are more likely to display stereotypically male behavior, and such masculine boys increased their masculine behavior with the more sisters they have. Younger siblings display a more needy behavior when in close proximity to their older sister and are more likely to be tolerant of an older sister's bad behavior. Older sisters are more likely to play with their younger siblings. Various studies have shown that older sisters are likely to give a varied gender role to their younger siblings as well as being more likely to develop a close bond with their younger siblings. This has been hypothesized as being attributed to the pheromones in their brothers' sweat and household-related errands. A study in Perth Australia found that girls having only youngers brothers resulted in a chastity effect, losing their virginity on average more than a year later than average. Males with a twin sister sometimes view her as their female alter ego, or what they would have been like, if they had two X chromosomes. In response, in order to avoid equivocation, some publishers prefer the usage of female sibling over sister. In some quarters the term sister has gradually broadened its colloquial meaning to include individuals stipulating kinship. In some cultures, sisters are afforded a role of being under the protection by male siblings, especially older brothers from issues ranging from bullies or sexual advances by womanizers. Some studies have found that sisters display more traits indicating jealousy around their siblings than their male counterparts, brothers. The English word sister comes from Old Norse systir which itself derives from Proto-Germanic *swestēr, both of which have the same meaning, i.e. Three sisters from the Spencer family, circa 1902.
