ET sources have spotted actress Joely Richardson, the younger sister of Natasha Richardson, at NYC's Lenox Hill hospital late Tuesday evening. Natasha has been at the facility since she arrived on a private jet from Canada on Tuesday.

ET's sources report seeing the "Nip/Tuck" actress accompanied by a boy in a hoodie and a girl, both appearing to be in their early teens. Earlier, Natasha and Joely's mother Vanessa Redgrave arrived at the hospital amidst news that Natasha's condition was "not good."

The actress and wife of Liam Neeson was injured in a skiing accident on Monday.