HOLLYWOOD — After spending time away from the spotlight, Lauryn Hill returned to the stage for a surprise perf Monday in BevHills for Cartier’s 25th anniversary/re-opening.

Party, which benefited Project A.L.S., boasted a guest list that included Lindsay Lohan, Sheryl Crow and Kristin Davis .

Sarah (Jessica Parker) educated me on where to invest in the diamonds — Cartier all the way,” Davis said of her former “Sex and the City” cohort..

Debra Messing admitted that she had a sentimental connection to the jeweler: “Cartier will forever be special to me because I was wearing a Cartier ring when I won my Emmy for ‘Will and Grace.’ ”

Despite the fact that they don’t get to wear the jewels, Matt Dillon, Andy Garcia and producer Jerry Bruckhiemer were also present.

When asked why he was at the event, Bruckhiemer had just two words: “My wife.”