The Bidens welcomed French President Emmanuel Macron and his wife, Brigitte Macron, for the first State dinner of the administration. The actress and her younger son were two of 400 VIPs who attended the event.
For their evening out, the Seinfeld actress looked chic in a floor-length, black velour gown which she paired with gold accessories and a matching clutch. Charlie, who currently stars in season 2 of HBO Max's hit series The Sex Lives of College Girls, kept it classic in a black tuxedo and bowtie.
In sweet photos from the night, Louis-Dreyfus and her son smiled and held hands as they entered the event.
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In addition to Charlie, the actress also shares son Henry, 30, with her husband of over 30 years, Brad Hall.
Louis-Dreyfus wasn't the only one to make Thursday's dinner a family affair.
For the occasion, Garner opted for a floor-length, black Ralph Lauren gown with sequin accents on the sleeve. She paired the dress with Stuart Weitzman shoes and a black clutch.
Violet's look featured a thin-strapped Carolina Herrera dress with heart imprints, pairing the outfit with a black clutch and red, pointed-toe heels.
The mother and daughter were seen sweetly holding hands when photographed during the event. It was a rare public outing for the two. Garner also shares daughter Seraphina Rose, 13, and son Samuel Garner, 10, with ex-husband Ben Affleck.