Kristen Bell was on "cloud nine" when she got to punch Meg Ryan.

The blonde actress was thrilled to share a fight scene with the Hollywood legend in new comedy movie 'Serious Moonlight'.

The "Valkyrie" star was "visibly flustered" when Penelope - who he dated for three years before they split in 2004 - approached him at a pre-Oscars party in Beverly Hills on Friday night.

The "What Happens in Vegas" star rushed through the back entrance of Los Angeles' Kodak Theatre on Friday to prevent running into Jessica, who is currently dating Cameron's ex-boyfriend, singer Justin Timberlake.

Estelle, nee Lebost, is probably best remembered for her one line role in her son Rob Reiner's 1989 romantic comedy film, "When Harry Met Sally," wherein she said "I'll have what she's having" in reaction to Meg Ryan's character in a deli. She also appeared in the Anne Bancroft-directed film "Fatso" and in Mel Brooks' "To Be or Not to Be."

The actor was left fuming when "The Women" star Meg claimed it was his extra marital dalliances that led to the demise of their relationship in 2001, and has criticized the actress for failing to consider their 16-year-old son Jack.