HOROSCOPE AND FORTUNE TELLING
Astrology, horoscopes, superstition and fortune-telling are all actions of jaahiliyyah (ignorance) which Islam came to show as false and to explain that they are shirk, because they involve depending on something other than Allah and believing that benefit and harm come from something other than Him, and believing the words of fortune-tellers and soothsayers who falsely claim to have knowledge of the unseen in order to cheat people of their money and change their beliefs. 
A person who claims to use special powers to tell what will happen to someone in the future. 
Islamically, astrology is used to predicting the future, those who practice it are considered fortunetellers. The practice of astrology is Prohibited in Islam, but also visiting an astrologer and listening to his predictions, buying books on astrology or reading one's horoscope are also forbidden. Since Consequently, one who seeks his horoscope comes under the ruling contained in the Prophet's statement,"The salah (daily prayer) of whoever approaches a fortune teller and asks him about anything will not be accepted for forty days and nights." [Sahih Muslim, vol. 4, p. 1211, no. 5440] 
Whoever claims to know some matter of the unseen either is a fortune-teller or is acting like a fortune-teller in some sense, because Allah is the only One Who has knowledge of the unseen. Allah says (interpretation of the meaning); This is a form of Shirk, because Allaah has clearly stated (what means): "And with Him [i.e., Allaah] are the keys of the unseen; none knows them except Him." Quran Surah Anam 6:59
Allah says: "Say: …None in the heavens and the earth knows the Ghayb (Unseen) except Allah—" Quran Surah al-Naml 27:65
Narrated Abdullah Ibn Abbas(R):The Prophet (ﷺ) said: If anyone acquires any knowledge of astrology, he acquires a branch of magic of which he gets more as long as he continues to do so. Sunan Abi Dawud 3905 
If, however, one believes in the predictions of their horoscopes, whether spoken by an astrologist or written in books of astrology, he falls directly into Kufr (disbelief) as stated by the Prophet: "Whoever approaches an oracle or fortune-teller and believes in what he says, has disbelieved in what was revealed to Muhammad."[Sunan of Abu Dawud, vol. 3, p. 1095, no. 3895] and Classed as saheeh by al-Albaani in Saheeh al-Jaami’, 5942.
Belief in astrology and the casting of horoscopes are in clear opposition to the letter and spirit of Islam. It is really the empty soul, which has not tasted real Eemaan (belief) that seeks out these paths. Essentially these paths represent a vain attempt to escape Qadar (fate).
These ignorant believe that if they know what is in store for them tomorrow, they can prepare from today. In that way, they may avoid the bad and ensure the good. Yet, Allaah’s Messenger(S) was told by Allaah to say (what means): "…If I knew the unseen, I could have acquired much wealth, and no harm would have touched me. I am not except a warner and a bringer of glad tidings to a people who believe."Quran Surah Araf 7:188
True Muslims are, therefore, obliged to stay far away from these areas. Thus, rings, chains, etc., which have the signs of the Zodiac on them should not be worn, even if one does not believe in them. They are part and parcel of a fabricated system which propagates Kufr and should be done away with entirely. No believing Muslim should ask another what his star-sign is, or attempt to guess what it is. Nor should he or she read horoscope columns in newspapers or listen to them being read. Any Muslim who allows astrological predictions to determine his actions should seek Allaah’s forgiveness and renew his Islam. 
Shaykh ‘Abd al-‘Azeez ibn Baaz(may Allaah have mercy on him) said:
Astrology, palm-reading, reading coffee cups, divination, and other things practised by fortunetellers and practitioners of witchcraft are all sciences of jaahiliyyah which are forbidden by Allaah and His Messenger, and are actions which Islam came to declare false and warn against doing them or going to those who do them and asking them about anything or believing what they say – because that is knowledge of the unseen which Allaah has kept to Himself.
Our advice to everyone who has anything to do with these things is to repent to Allaah and seek His forgiveness, and to put their trust in Allaah Alone in all their affairs, whilst also taking the appropriate means as prescribed or permitted in sharee’ah. They should give up these things and keep away from them, and beware of asking these people anything or believing them, in obedience to Allaah and His Messenger (peace and blessings of Allaah be upon him), and so as to protect their religious beliefs and commitment, and for fear of the anger of Allaah, and so as to keep away from the things that lead to shirk and kufr, which if a person dies believing such things he will be a loser in this world and in the Hereafter. Majmoo’ Fataawa al-Shaykh Ibn Baaz, 2/120-122