From PerezHilton.com:

Orlando Bloom may be reheating his love muffin with Kate Bosworth, but it wasn’t Kate that Orlie brought along with him as his date to the Coldplay concert at the Verizon Wireless Amphitheater in Irvine on Saturday.

“Orlando brought along his dog, Sidi,” a well-connected friend of PerezHilton.com tells us. “He was hanging out with his dog backstage, and – no – Kate Bosworth wasn’t there.”