Compared to the multiple film festivals earlier in the month and the Emmys that were held two weeks ago, the last week of September could be considered a quiet one. But as we know, celebrities always find a reason to dress up and have a good time! Teen Vogue held their annual Young Hollywood party, which was attended by the likes of Hailee Steinfeld and Australia’s Phoebe Tonkin and Callan McAuliffe. Jennifer Lopez proved that she’s loving her single life by partying at Pure Nightclub in Vegas, and Ashton Kutcher, who has been plagued by split rumours this week, celebrated his friend Ryan Seacrest in LA. Dannii Minogue did some book signing in the UK, while Brit export Alexa Chung kept up her fashionable appearances in NYC. Step inside our gallery to catch up on more celebrity events, and enjoy the rest of your long weekend!