The singer looked sexy in a black cut-out dress paired with studded leather booties.
She wasn't the only hot celebrity mom in the house. Hilary Duff also attended wearing a black ensemble - tiny shorts and a short-sleeved blouse. She has a 16-month-old son named Luca Cruz Comrie.
Alyssa Milano's 2-year-old son Milo Thomas Bugliari came with his mom to the premiere. The actress looked sweet in a black and white geometric patterned frock.
Mom-of-four Brooke Burke opted for a casual look with a silky blue tank top and ripped white jeans with stilettos. Teri Hatcher wore a strapless cream colored dress and brought her 15-year-old daughter Emerson to the premiere.
"Planes" centers on a crop duster named Dusty who wants to compete in an around-the-world air race even though he's afraid of heights. It hits theaters on Aug. 9.
Check out more photos from the premiere...