Out on the town! Meghan Markle grins as she leaves Tyler Perry’s lavish birthday party in Montecito, accompanied by Prince Harry

It was all smiles for Meghan Markle and Prince Harry on Saturday night, as the pair attended a starry birthday bash for their longtime friend, Tyler Perry.

The night before Harry would celebrate his own birthday, the couple were spotted at the $23 million mansion in Montecito, where they celebrated the filmmaker’s 55th year,…