Many 30+ women are described as having their "lives together" and knowing exactly what they want out of relationships and life.
While sometimes used interchangeably, distinct nuances exist:
Centered on the aesthetic of being a "hot mom" and the energy associated with that role.
Defined more by behavioral traits, specifically the active pursuit of much younger partners. The MILF and Mistress - Victorian Pride Centre
The "MILF energy" is often defined by a "hot mom" aesthetic rather than just behavior. This can include enhanced physical features and form-fitting clothing that highlights their body shape. Pop Culture & Media Representations