Move over, Naomi Campbell.
On Sunday's Kourtney and Khloe Take Miami, Kim Kardashian pays a visit to her sibs, but Kourtney gets irked because Kim, 29, is constantly on her phone.
"Kim is like a crack addict when it comes to her BlackBerry!" Kourtney, 31, complains in the clip (above). "If it's not in her hand, she literally starts twitching."