Seventeen studies of similarity in physical attractiveness between members of romantic couples or pairs of same-sex friends, employing 34 independent samples of dyads, were retrieved. Meta-analysis found the interpartner correlation for attractiveness to be higher for romantic couples than for pairs of friends. For couples, the correlations were homogeneous across 27 samples, with an average correlation of .39 (.49 after correction for attenuation). For pairs of friends, variations among correlations were found but were explained by gender of dyad: the matching effect was obtained only with men. Romantic partners were also similar in their self-ratings of attractiveness. These findings were related to contemporary theories of relationship formation.