[Daniel Radcliffe, Emma Watson, Rupert Grint. Photo via Getty] Last night at the historical, elegant Ziegfeld Theater, Warner Brothers Pictures presented the (North American) Premiere of Harry Potter and The Half-Blood Prince. This movie is the 6th installment in the Harry Potter phenomenon. The after-party was held at American Museum of Natural History that was transformed into a fittingly Harry Potter themed world.

Stars from the film, Freddie Storma, Warwick Davis, Michael Gambon, Bonnie Wright, Daniel Radcliffe, Emma Watson, Rupert Grint, Tom Felton, Alan Rickman were all present. A variety of other guests attending ranging from singer Ashanti, actor Denis Leary, Chevi Chase to Diane Sawyer to Lance Bass and more..

Photos below by JIMI CELESTE for PMc

Michelle Trachtenberg

Kelsey Grammer, Camille Grammer, Mason Grammer

Daniel Radcliffe, Emma Watson, Rupert Grint

Ashanti

Lance Bass

Daniel Radcliffe, Emma Watson, Rupert Grint

Diane Sawyer

Tom Felton

Daniel Radcliff and Warner Brother's Alan Horn, photo via

Gina Gershon

After-party bar via