Are Capricorns good looking

Astrology can never really give a solid answer to such a question. In general the traits of a Sun sign are easily modified by the entire natal horoscope's interpretation. If a given person has a predominance of a given zodiac sign or planet in their natal chart they may have a lot of traits associated with that sign.

Capricorn is ruled by the planet Saturn. In general a predominance of Capricorn lends to either a tall, bony figure or that which is short and stocky. Saturn rules the bones and beauty that has lasted the test of time, thus high cheek bones may be common, symmetrical features that are classically beautiful and often good teeth. In some types the eyes may be beady and closely placed or critical and the expression stern. Dark hair and a stern expression may be present. Some good examples of people with a lot of Capricorn influences are Elvis Presley (Sun, Mercury + Venus In Capricorn in the 2nd house), Orlando Bloom (Sun, Mercury + Mars in Capricorn in the 11th house), Zooey Deschanel (Sun, Moon, Mercury and Ascendant).