Miranda Cosgrove: Siren Studios Birthday Celebration!

Miranda Cosgrove blows out the candle on top of her gorgeous Sweet Lady Jane birthday cake as she throws a party at Siren Studios in Hollywood on Saturday night (June 11).

The 18-year-old actress, wearing Katharine Kidd, not only celebrated her birthday with her closest friends and family, but also the television premiere of “iParty with Victorious” and her high school graduation!

Miranda tweeted, “Im having a late birthday/graduation party tonight with all my favorite people! Getting super excited! Cant wait 4 the Sweet Lady Jane cake. Had a truly great night. I love my friends :)”

Daniella Monet, Ariana Grande, Gage Golightly, Ashley Argota, Leon Thomas, Noah Munck, Jerry Trainor, Haley Ramm, and Jennette McCurdy were all in attendance.