Parallaxes of 54 Pleiades stars of the Hipparcos solution are indicated with black crosses. The mean and standard deviation of these Hipparcos parallaxes is shown by the grey band enclosed by a dotted line. Eleven of the Hipparcos stars have HARPS spectra and have been analysed in this work (red squares). Our results are indicated with blue triangles. The standard deviation of these values are shown with the blue band enclosed by the blue line. The pink band represents the values of the Hipparcos solution within its margin of error, while the yellow band represents the range of the alternatives to Hipparcos.