Lamar Odom looked skinny as he attended a children's Halloween party for his friend's son in Studio City, Calif., on Saturday, Oct. 19 Credit: JOHN GALT/Splash News

Lamar Odom is getting back into the swing of things! Khloe Kardashian's estranged husband was spotted attending a children's Halloween party for his friend's son in Studio City, Calif., on Saturday, Oct. 19. Looking skinny, the NBA free agent was photographed wearing an army colored t-shirt and two cross necklaces during the outing. 

Odom, 33, has slowly but surely been making his way back into the public eye since leaving a lot of people worried about his drug addiction and well-being. On Oct. 15, the star enjoyed a leisurely lunch with friends in Glendale, Calif., for five hours.

"He is trying to show Khloe that he's changing and he wants to make it work," a source told Us of Odom. "He is working out and looks really good and is happy again. It's so nice to see him getting better."

Two weeks prior, Us Weekly exclusively revealed that Odom reunited with Kardashian, 29, at her home in Tarzana, Calif. "He was there for a couple of hours and they spoke," an insider revealed to Us. "They talked for a while, and he left."

During the quick chat, the reality star made clear that she plans to file for divorce soon. "Khloe was very firm," the friend continued. "She think it's best they both move on."