Johnny Depp and his fiancee Amber Heard celebrated their upcoming wedding at an intimate engagement party with loved ones in downtown L.A. on Friday, March 14 -- get the details Credit: Steve Granitz/WireImage

Private couple, private bash! Johnny Depp and fiancee Amber Heard finally celebrated their impending nuptials with an intimate engagement party in downtown Los Angeles on Friday, March 14.

Depp, 50, and Heard, 27, enjoyed a party at The Carondelet House, an insider tells Us Weekly. (The stunning private brick house was created in 1928 as an Italian Villa to host special events.) The former Rum Diary costars arrived an hour after guests, which included Marilyn Manson, Steven Tyler, Mandy Moore, Pirates of the Caribbean producer Jerry Bruckheimer, and Rick Ruben.

The stunning bride-to-be wore a white silk spaghetti-strap "vintage dressy" ensemble for her big night, with her blonde locks down. Depp, meanwhile, went for a casual black suit and matching top hat. Heard's sister arrived with the couple, as well as Jack, Depp's 11-year-old son with his ex partner Vanessa Paradis.

Once inside The Carondelet House, the future spouses enjoyed a bite to eat and listened to oldies rock songs. The playlist included retro classics from the '60s through the '80s like "Wild Thing" by The Troggs, "Tutti Fruti" by Little Richard, "Jailhouse Rock" by Elvis, "These Boots Are Made For Walking" by Nancy Sinatra, and "We Got The Beat" by The Go-Go's.

Us confirmed on Jan. 17 that Depp popped the question to Heard after nearly two years of dating. The couple quietly went public with their relationship in June 2012, shortly after Depp announced his split from Paradis. Depp and the French singer and actress were together for 14 years and also share daughter Lily-Rose, 14.