Simone Masterson-Horn's 5th Birthday Party Hit All the Right Notes

When Simone Masterson-Horn turned 5 on June 7, her fathers, Scout Masterson (right, holding son Bosley Jo) and Bill Horn (left, holding Simone), took party inspiration from an unlikely source: Chanel No. 5 perfume. The resulting event, which the "Guncles" (close pals of Tori Spelling) held at their Los Angeles home on June 20, was an elegant, fun-filled bash bound to fill Francophiles everywhere with envy.

Masterson and Horn have been waiting a long time to see Simone's June 20 party come together: "When Simone was a baby, Bill and I picked the 'Simone No. 5' theme and at the time it felt like she'd never turn 5!" says Masterson. "Now here we are – it all flew by so quickly!" From the looks of things, the big day was more than worth the wait.

On her actual birthday, Simone's dads gifted her with her first-ever bottle of perfume: Chanel No. 5, naturally. For her party, however, the birthday girl asked that guests bring stuffed animals for the family's favorite charity, Baby Buggy. Bears for Humanity also donated 30 bears to the non-profit.

The Parisian-chic theme was evident from the start, thanks to the stunning black, white and soft pink invitations, featuring the party's Simone No. 5 logo. Both motifs reappeared in the gift bags, which included playing cards bearing the logo, a Bears for Humanity stuffed bear and a bottle of Ella + Mila nail polish in a custom Simone No.5 pink, all in a black, white and pink striped tote.

The party's desserts were provided by celebrity baker (and Masterson and Horn's good friend) Jenny Keller of Jenny Cookies. In addition to creating the amazing desserts and Simone's stunning "naked" cake, Keller also helped plan the big day. "Planning Simone's birthday parties with Jenny is one of the things I look forward to all year," says Masterson. "We're party (and life) BFFs! I adore her. She's incredibly talented."

The décor wasn't the only aspect of the party to take inspiration from the birthplace of couture: guests dined on savory crepes, which were made to order, and fresh fruit.

Party-goers were able to create their own signature scents at the ultimate perfume bar, which they then took home in – what else? – Simone No. 5 rollerball bottles. The party-planning dads also set up a Charm It! table, where kids were able to design necklaces with birthday and Parisian-themed charms.

Guests at the bash included Simone's "cousins" Liam, Stella, Hattie and Finn McDermott (there with mom Tori Spelling) plus actress Tammin Sursok and family and Simone's best friend Harper Smith (Tiffani Thiessen's daughter), who posed with the birthday girl for a caricature. Simone also posed for one with her family; Masterson and Horn loved it so much that it's already on display in their home!

The Crown Collective was also on hand to design custom flower crowns for all of the guests (like the one being modeled here, by Simone's "cousin" Stella McDermott). They also created the elaborate No. 5 that hung over Keller's delicious dessert table.