Cordelia is one of five who descended to Earth from the distant Sirius Constellation.
Out of the five, she is high royalty, possessing powerful magic known only to her kind.
Additionally, she craves loyalty and power from all her subjects, those who can't stand toe to toe with her are dismissed or in serious circumstances, locked away. Her general outlook on life is vastly different from your typical human or other demi-human and most see her as a 'mad-woman' with overzealous tendencies, especially when achieving her goals.
Cordelia keeps her true mission on Earth top secret though she may give out hints to those who she befriends, generally keeping to herself. Her actual age is unknown by most, but speculated to be much older than an extreme majority of humans.
To Cordelia, anyone can be her greatest asset or her worst enemy, with her there is no in-between. She has also been known to show no interest in species that are male and can be rather naïve in general human activities and affairs.
In her primarily matriarchal society, breast size can and may influence your social standing, power and dominance this is important to note when considering her large, exposed chest. Flaunting such assets can and is considered with grace and confidence for her people.
"Knowledge is everything"