Cosmo Sergio Kletnoy

He’s back! Sergio Kletnoy, the right-hand man to Cosmo EIC Joanna Coles, returns with the latest moves from his busy world. …

A plethora of screenings are keeping Cosmo’s Sergio Kletnoy from some much-needed R&R, but he doesn’t seem to mind the …

Back-to-back screenings and concerts? Oh, just another week for Cosmo’s Sergio Kletnoy, assistant to EIC Joanna Coles by day and …

The perfect treat for post-NYFW fatigue: a hit of Cosmo’s Sergio Kletnoy, in all his starry-encountered and music-recommending glory, including …

Anyone else besides Cosmo’s Sergio Kletnoy have a killer week and feel in direeeeee need of the weekend’s arrival? (at …

This week, Cosmo’s Sergio Kletnoy, right-hand man with the mostest to EIC Joanna Coles, hangs with a Real Housewife, gets …

A brief but no less entertaining and illuminating check-in with Cosmo’s Sergio Kletnoy, full of music recs you simply must …

The latest escapades of Cosmo’s Sergio Kletnoy, assistant extraordinaire to EIC Joanna Coles, involve an epic mother’s day, a J.Lo …

In light of this week’s somber news, Cosmo’s Sergio Kletnoy gives us a briefer than usual glimpse into his life …