Justin Hartleyis getting back to work after filing divorce docs, and he's doing it with a little less weight ... on his left hand.
Check out these pics of Justin Thursday on the set of a photoshoot -- you can clearly see his wedding ring is now MIA, which, honestly ... is to be expected at this point. As we first told you ... the "This Is Us" star filed to divorce actress Chrishell Stause 2 weeks ago ... after 2 years of marriage.
Justin's filing appears to have blindsided Chrishell ... because there's a huge 5-month difference in their accounts of when they separated. He says they separated on July 8, but in her response, she lists it as Nov. 22 ... the day Justin filed the divorce petition.
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The breakup is proceeding quickly now. Chrishell packed up her things Wednesday and moved out of the former couple's L.A. home and into a place of her own.
Justin ditching his wedding ring, publicly, the very next day is a sure sign he's moving on too.