Sydney Sweeney is in her bombshell era ... debuting a sexy new blonde bob and a plunging pink gown at the Christy premiere in Los Angeles. The "Euphoria" star turned heads at the AFI Fest Saturday night, showing off a new chop that had everyone doing a double-take. She ditched her long locks and debuted a fresh, wavy blonde bob that hits just above her shoulders ... a switch up from her signature look. Sydney matched her bold new 'do with a light pink halter dress that hugged her curves and