Heidi Klum: Beach Day with Martin Kirsten & Lou!

Heidi Klum and her beau Martin Kirsten hit the beach for some post-New Year’s celebrations on Tuesday (January 1) in Santa Monica, Calif.

The 39-year-old model and her bodyguard beau were joined for their chilly beach day by her youngest daughter Lou.

PHOTOS: Check out the latest pics of Heidi Klum

“The 1st of January is almost over” Heidi tweeted at the end of the day, along with a pic of the beautiful California sunset.

35+ pictures inside of Heidi Klum, Martin Kirsten, and Lou enjoying the first day of 2013 on the beach…