Kristen Stewart was still rocking out to her music as she touched down at JFK last night, acquiring a few more layers than she had taking off from LA a few hours earlier. After managing to have actual private time in LA, she's east for a long few days of The Runaways promotion before it hits theaters on Friday and shows what it has at the box office. Last time she was in the city it was to support Robert Pattinson at his Remember Me screening, though with his being tied up shooting Bel Ami in London he can't return the favor for his girl. Still, you can see the covert couple together in the action-filled extended Eclipse teaser.