That is a lot of cell phone pics!

The youngest members of the Kardashian Klan, Kylie and Kendall Jenner, did what they do best -- caused some serious chaos at The Grove in Los Angeles on Wednesday. The gruesome twosome sent fans and mall goers into a tizzy when they were introducing their personal line at Topshop.

A loud and lengthy crowd gathered to catch a glimpse of the media-loving teens. While at the trendy outdoor shopping mall, the two had a photoshoot outside the store. For the debut, Kendall donned a striped, high-necked halter, black, see-through culottes and a pair of Hermes sandals. The always sexy Kylie wears a form-fitting orange Square Neck Ribbed Maxi Dress from Topshop, which retails for $35.

The girls' California-inspired collection ranges from a $52 t-shirt to a $150 white jacket, which Kylie wore to the event.

Of course each girl accessorized their ensembles with a tiny pup, which they left off the event's red carpet. These two celeb sisters really are something else! Oh and hanger-on Hailey Baldwin was there too (but who really cares about her?!).