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Rumer Willis had to control her laughter when she learned her mom, Demi Moore, had lost her two front teeth.

“She called her to check in and see what happened, and was trying not to laugh over the phone because her mom sounded like a kid with a lisp after losing their two front teeth,” a source said.

Willis DJ’d the Studio Svedka Blue Raspberry party in LA on Wednesday and was overheard saying that she and Moore were both heading to Chicago to film the new season of Fox’s “Empire.”

“She said she was hoping they had the same schedule, so her mom could stay at her place in the Windy City so they could spend time together,” a spy told us.

Rumer’s sister Tallulah, Kate Upton and “Real Housewives of Beverly Hills” star Erika Jayne were also at the party.