Sienna Miller’s birth chart

With the Sun in Capricorn, Sienna Miller is likely to find purpose in building a reputation and a structure that will outlast them, with a vitality that is steady rather than showy. The trap can be measuring their worth by output alone. They may well work through tiredness instead of naming it, until someone else has to point it out.

Born before about 07:55: Moon in Capricorn

With the Moon in Capricorn, Sienna's comfort probably comes from accomplishing something concrete each day, and an unproductive day can leave them oddly unsettled even on holiday. Harder feelings tend to be kept for when they are alone. Before rest is allowed there is usually one more thing to tidy, organise or finish.

Born after about 07:55: Moon in Aquarius

An Aquarius Moon processes daily feelings by stepping back and thinking them through rather than sitting inside them, and Sienna is likely to need a degree of independence built into any close relationship. The temptation is to analyse a feeling instead of simply having it. Even after a good day with people, this Moon needs time alone to recover.

Mercury in Capricorn thinks methodically, and Sienna tends to communicate in a measured, practical way that people trust. The focus on a useful conclusion can be so strong that ideas which have not yet proven their worth are dismissed. Sienna will often get straight to the point in a conversation other people expected to be casual.

Venus in Aquarius loves as a friend first, and values independence, shared ideas and a partner who allows plenty of room. Sienna may keep just enough distance that closeness feels slightly out of reach, even to them. This Venus can prize a partner's individuality more than the intimacy between them.

In Sienna's chart, Mars in Libra acts diplomatically and prefers negotiation to confrontation, and its anger tends to stay buried until it is too big to ignore. Avoided consistently, conflict leaves resentment building underneath the calm surface. The pattern is saying yes to something that rankled, then feeling it later.

Jupiter in Scorpio grows by facing what is difficult rather than avoiding it, even when that is the harder road at the time. The overreach, for Sienna, may be an intensity that turns a manageable situation into an all-consuming one. The resilience tends to be noticed only after the hard part is over.

For Sienna, Saturn in Libra means discipline built around relationships, and fairness and commitment are trusted slowly. The doubt is overthinking whether a partnership is truly equal. With time, people with this Saturn tend to become the ones others rely on to negotiate and to keep things fair.

Uranus in Sagittarius is less about Sienna than about the years around their birth. People of that age transform belief and access to knowledge, often through unprecedented exposure to other cultures and ideas. The personal trace is a restlessness with any single worldview presented as the only one.

Neptune in Sagittarius is the dream of a generation: grand systems of belief and utopian journeys. What belongs to Sienna in it may be a hopeful conviction that the right philosophy will resolve a practical problem.

Pluto in Libra is the signature of the generation Sienna belongs to, because Pluto moves so slowly. That generation transforms ideas of partnership, fairness and what people owe one another. Personally it can be an intense need for relationships to be fundamentally fair.