No grand opening for a Giant Eagle Market District would be complete without culinary stars.

Quite a few will be on hand as the Pine Giant Eagle makes its transition to Market District status from 9 a.m. Thursday to 9 p.m. Sunday with grand opening festivities.

The grand opening in the store at 155 Towne Centre Drive in Wexford will feature food samples, demonstrations, giveaways, children's activities, live music and surprises.

TLC's Cake Boss Buddy Valastro will sign copies of his latest book, Baking with the Cake Boss: 100 of Buddy's Best Recipes and Decorating Secrets, at 1 p.m. Thursday. The book will be on sale on the day of the event. 

Bravo's Top Chef runner-up Michael Isabella will demonstrate Mediterranean cooking and sign autographs at 4 p.m Thursday. 

Then at 3:30 p.m. Friday, the winner of the first MasterChef title on Fox, Whitney Miller, will share her story and recipes and sign her new cookbook, Modern Hospitality: Simple Recipes with Southern Charm!

Veggy artist James Parker will sculpt vegetables into works of art all day long on Friday.

On Saturday at 11 a.m., Aida Mollenkamp of Food Network's Ask Aida and the Cooking Channel's FoodCrafters demonstrates her use of fresh, seasonal ingredients.

Chris Fennimore, program director of WQED-TV-13 and host of QED Cooks, will cook up some of his favorite recipes starting with homemade soup at noon and then bruschetta at 12:30 p.m.

To register for free tickets to the celebrity appearances, visit MarketDistrict.com/Events. Seating is limited.