Allison Williams  welcomes first baby with Alexander Dreymon

Allison Williams and Alexander Dreymon became parents to a baby boy named Arlo.

The couple — who worked together on the 2020 thriller “Horizon Line” — have reportedly been together since the end of 2019. 

This marks the first baby for the “Girls” alum.

Allison was previously married to entrepreneur Ricky Van Veen.

The pair called it quits in June 2019 after nearly four years of marriage

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Williams and Dreymon have reportedly been a couple since the end of 2019.

Though Allison’s romance with Dreymon, 39, reportedly flourished during the COVID-19 pandemic

The insider added, “They’ve just been doing their best to keep a low profile.”