Spotted! April 14, 2008

(Theo Wargo/WireImage)

After landing in New York City on a flight from Japan, Rihanna was not ready for bed as she suffered from jet lag so she made it a night out, but unlike other clubgoers, her night started at 3 a.m. Rihanna rounded up her friends and headed to Roomservice where she kept it alcohol free and drank VitaminWater. Not ready to head home at 4, the owners kept the club open an extra hour. An eyewitness tells OK!, "It was great, at 5 a.m., when the lights came up, she sang "Please Don't Stop the Music" to the deejay to have him keep playing."

Dina Lohan was at the N9NE Group's ghostbar at the Palms showing Lindsay's current personal assistant around since it was her first time at the bar and lounge. A witness tells OK!, "They were in a great mood drinking Grey Goose and Cranberry and chatting with a couple of female ghostbar guests. Dina was overheard explaining to the ladies that she and her daughter Ali are in town filming Living Lohan, their new reality series soon debuting on E!. 
 

Meanwhile, another teen sensation, JoJo, was getting makeup applied and hair styled at Butterfly Studio Salon in NY.

Seen a celeb, e-mail spotted@ok-magazine.com