Which aspects are most likely to make someone beautiful?

In general :

“Beauty is in the eye of the beholder.” Standards of beauty differ from culture to culture, and change over time. And of course, “beauty is only skin deep.” There are no absolute standards , perhaps, for physical beauty; and because genetics plays such a large role in the equation, it’s very difficult to look for an astrological “signature” for physical beauty.

Yet ,

Venus. Venus, of course, is the planet of beauty. A strong, dignified Venus will go a long way towards blessing an individual with physical attractiveness.

The Ascendant and 1st House describe an individual’s appearance, and in particular their facial features. Any planets in the 1st house are also important, and their strength and condition will greatly influence an individual’s appearance.

A positive Jupiter aspect may not change a person’s physical appearance, but it may help to emphasize their best features, help them to form an outgoing and generous personality that will help them to be perceived as attractive.

Moon aspect by Jupiter

Venus soft aspect to Sun and/or any aspect to the ascendant is traditionally said to make someone more pleasing to the eye. Even Venus square ascendant is said to give someone a pleasing appearance.

No aspects. Venus rising gives charm and beauty. When Venus is rising in Gemini or Virgo, it gives a very youthful look and good looks.

Venus in the first house people usually are very attractive physically. They have this youthful charm to them, people are attracted to them, charming and slight manipulation comes easy to people with Venus in the first house. Especially when in libra Taurus or Pisces