Orlando Bloom dropped Miranda Kerr off at the McCartneys' "My Valentine" bash at LA's Madeo on Friday, then proceeded to LAX with their 15-month-old son Flynn Bloom. Miranda wowed in a dress from Stella McCartney at the party, where she mingled with celeb friends like Gwyneth Paltrow, Kristen Stewart, and Gwen Stefani. Orlando strapped Flynn to his chest to head into the airport and check in for their first-class seats on a Qantas flight to Australia. Despite not joining them on the plane, it seems Miranda's had a recent airline experience herself. She tweeted at British Airways yesterday over some missing bags, writing to BA, "Hope you find my lost baggage soon!"