Kim and Kourtney Kardashian were enjoying some sisterly bonding time along with their youngsters on Thursday. Each actuality beauties had been rocking off duty appears, with Kim dressed in a plain black tracksuit and mum-of-3 Kourtney in a T-shirt and jeans. Kim, who hardly ever leaves the home with no her full glam, had her hair scraped back into a large ponytail and hid behind a pair of oversized sunglasses. Kourtney, who was sporting exactly the identical hairstyle, could have passed for her twin as they have been noticed out in Beverly Hills. Kourtney Kardashian taking her kids to a music class Yummy mummy Kourt was taking little Penelope and child Reign to their weekly music class. Reign looked as cute as a button dressed in a double denim outfit, although Penelope looked summery in a red dress. The pair have been snapped exchanging a handful of phrases just before Kim drove off. Meanwhile, Kim and hubby Kanye have threatened their former bodyguard with a $10million lawsuit, after he spoke out with a series of shocking claims about the couple. Former New York police officer Steve Stanulis accused rapper Kanye of 'sacking him' soon after he was witnessed chatting to Kim in a corridor. He also created shock claims about the rapper himself, producing him out to be a diva - and the couple are fighting back. A rep for Kim and Kanye said: "The West Household will no longer tolerate the spreading and offering of fake stories in an desperate, transparent and shameless try for publicity at their expense. "This sad, parasitic maniac has violated every single basic human tenet of decency with his story of lies. As such, the Wests will explore all legal signifies at their disposal to silence this nonsense." According to TMZ, they have threatened him with a hefty lawsuit - unless of course he stops dishing the filth and publicly apologises for what they insist are fully false claims. The site claims "Steve signed a confidentiality agreement promising by no means to breathe a word about Kim, Kanye or the klan", and he's reportedly ordered to shell out $10million if he ever breaks it. Nevertheless, he will reportedly be allow off the hook if he troubles a public apology and agrees not to talk out yet again.