The guest list is growing by the minute for Perez Hilton‘s “One Night in Austin,” the celebrity-blogger’s first South By Southwest bash, which closes out the festival on Saturday night and includes a curious assortment of stars. Among those who’ve RSVP’d: indie rock lover and culinary queen Rachael Ray, who’s hosting her own event earlier in the day, legendary singer Van Morrison, country bad girl Shelby Lynne, and hip-hop star Talib Kweli. They’ll be joined by several hundred sure-to-be-fatigued festival-goers and entertained by Swedish pop darling Robyn, who was previously announced to perform. The night’s special surprise guest, EW.com has learned, will be Pharrell Williams’ band N.E.R.D., which has a new album coming out in June. Perez, meanwhile, has yet to finalize his deal with Warner Bros. Records, which has reportedly offered him an A&R position and his own imprint.