Kylie & Kendall Jenner Wrapped Around Chris Brown & Trey Songz [PHOTO]

Singer Trey Songz shared a picture of himself and fellow singer Chris Brown partying with Kardashian-Jenner youngins, Kendall & Kylie.
In the photo, Songz holds Kendall, 18, tightly while Breezy smokes with his arm around 16-year old Kylie.
Are they old enough for this? See the photo below.