Heidi Klum, Martin Kristen motorcycle Harley-Davidson

On Saturday Heidi Klum and Martin Kristen went for a joy ride in Brentwood, and the supermodel/TV personality held on tight to her man.

When she's not busy looking after her four kids, promoting both of her shows and squeezing in quality time with her beau, Heidi is already thinking about Halloween!

Earlier this week she posted an Instagram photo of her face covered in clay getting fitted for a mask and wrote, "Started working on my Halloween costume! #HeidisHalloween." Can't wait to see what she goes as this year ... even if it is three months away!