It's been an especially sad few days in Hollywood, as two stars have passed, leaving behind legions of fans. This morning the news came that iconic actor Tony Curtis (father of Jamie Lee Curtis) had passed away due to cardiac arrest at the age of 85. The "Spartacus" and "Some Like It Hot" star (pictured) made an impact on generations beyond his. Case in point, celebs like actress Jaimie Alexander who posted, "RIP Tony Curtis 
you were my favorite" and singer Kylie Minogue who shared, "RIP Tony Curtis xxx Legend!"
But, unfortunately, Tony wasn't the only talent the industry had to say goodbye to. Greg Giraldo, a beloved stand-up comedian known for his work on the Comedy Central Roasts, as well as a judge on "Last Comic Standing" died at the age of 44 on Tuesday from an accidental drug overdose. Friends and colleagues took to their Twitters to honor the funnyman, including Nick Cannon who wrote, "RIP to my friend Greg Giraldo. He was the coolest dude ever! Your talent will be missed brotha!!" Fellow comedian Aziz Ansari left his condolences as well, "Very sad to hear the news about Greg Giraldo. One of the most respected comics I can think of. The world has lost a hysterical man. RIP."
Check out the rest of Thursday's best tweets from the stars and find out which celeb has beef with Shia LaBeouf and who is chowing down on the set of "Grey's Anatomy"!Follow us @hollywoodcrush to get even more celebrity and pop culture news around the clock!
@jennaldewan Met Demi Lovato tonight, she is so sweet and beautiful!! Aaaand were from the same hometown..go Texas
-Jenna Dewan, Actress ("Step Up," "Take the Lead")
@carsonjdaly @adriangrenier is on tonight and eats pancakes. So is @thatkevinsmith.
-Carson Daly, TV Host ("Last Call With Carson Daly," "TRL")
@shondarhimes Tomorrow is the Grey's Anatomy Banana Split Eating Contest. My money's on Kevin McKidd... but as an official judge, I must remain impartial
-Shonda Rhimes, Writer, Producer ("Grey's Anatomy," "Crossroads")
@frankiemuniz Dear Shia Labeouf. It's getting creepy the fact that you can't stop talking about me. It's been 12 years now. I don't know you. Thanks.
-Frankie Muniz, Actor ("Malcolm in the Middle," "Agent Cody Banks")
@johncusack i may be dumb but why do people want me to follow them so much?
-John Cusack, Actor ("2012," "Serendipity")
@whitneyeveport My grandma used to say I was the ugly duckling of the family... http://bit.ly/c0cZvI Do you think she was right??
-Whitney Port, Reality Star ("The Hills," "The City")
@robertsemma In desperate need of an Urban Outfitters fix
-Emma Roberts, Actress ("It's Kind Of A Funny Story," "Scream 4")
@iansomerhalder BTWnew episode tonight,it's really good & we are proud of it-so please check it out!Thank you and enjoy- this episode almost killed us all!
-Ian Somerhalder, Actor ("The Vampire Diaries," "LOST")
@sn00ki So excited for my book a Shore Thing!! About life at the Jersey Shore, boys, drama and best friends. Hysterical
-Snooki, Reality Star ("Jersey Shore")
@msamberpriley Answering some fan mail, thank you guys so much for the letters 
I'm answering back, it may take a while though lol there are soooo many!
-Amber Riley, Actress ("Glee")
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