The 39-year-old fashion designer – who was spotted at Paris Fashion Week earlier this month – looked darling in a patterned turquoise and gold number.
For her part, the American Horror Story actress opted for a chic, beige frock with a matching blazer.
Nicky wore her hair in a side part and loose spirals that fell over her shoulders.
Emma arranged her golden tresses in a deep side part, securing the front section with two bobby pins.
Stylish: Nicky Hilton and Emma Roberts each showed off their summer style as they rocked maxi dresses at Tod’s annual East Hampton dinner party on Wednesday
Nicky’s look: The 39-year-old fashion designer looked darling in a patterned turquoise and gold number
Nicky, who gave birth to her third child last summer, bared a bit of her midriff in her dress’ cutouts.
The plunging look also revealed the mother-of-three’s perky cleavage and featured long lantern sleeves.
The fashionista accessorized with coordinating turquoise jewelry including dangling earrings and rings.
Her outfit’s color palette also served to play up her big blue eyes, which she accentuated with black mascara.
Nicky, who’s married to James Rothschild, rounded out her look with a pair of stone-covered open-toe heels.
Paris Hilton’s younger sister carried her belongings in a small, robin’s egg blue leather handbag.
Emma carried the same one in a beige color that matched the tone of her outfit.
She looked effortlessly sophisticated as she draped her jacket over her dress.
Flawless: Nicky wore her hair in a side part and loose spirals that fell over her shoulders
Mingling: The two celebrities beamed as they enjoyed each other’s company at the soiree
Cute: Emma arranged her golden tresses in a deep side part, securing the front section with two bobby pins
Another attendee at the third annual star-packed event was designer Rachel Zoe.
The 51-year-old fashion mogul arrived to the gathering in an asymmetric dress with a bold, turquoise and amber floral pattern.
Her look boasted a toga-inspired silhouette with its one draping sleeve and diagonal neckline.
The fashion-forward beauty complemented the getup by wearing her bright blonde locks in a center part and orderly crimps.
Zoe rounded out the ensemble with a pair of open-toe, black, high heels.
She wore a statement-making gold necklace with various stones that picked up the colors in her frock.
The New York native turned heads in a full face of illuminating makeup that made her hazel eyes stand out.
Her carefully-applied face of cosmetics was finished with a glossy pink hue coated on her pout.
Sleek: Paris Hilton’s younger sister carried her belongings in a small, robin’s egg blue leather handbag
Visage: The star looked typically stunning in a full face of glowy makeup
Flesh: The heiress flashed her freckled chest with her look’s plunging neckline
Guest: Another attendee at the third annual star-packed event was designer Rachel Zoe
Chatting: Emma was fully engaged in a conversation with Rachel and Nicky
Monochrome: Emma dazzled in her understated and elegant look
Beautiful: Roberts looked darling in a matte makeup look that she finished with pink lipstick
Actress Kathryn Newton was among the guests at Wednesday’s high-profile event.
The 26-year-old actress rocked a flirty updo for the occasion, pulling her blonde hair into a chic top knot bun.
The hairstyle was framed with curtain bangs that were arranged with a part down the middle.
Her thick, dark eyebrows framed her face and she accentuated her lips with a bright red matte lipstick.
Kathryn dressed in a brown, half-sleeved sweater with a zip-up front connecting to its collar.
It was stylishly teamed with a clinging black mini skirt that bared the entertainer’s toned legs.
Neil Patrick Harris and husband David Burtka also enjoyed the lavish celebrity party.
The 50-year-old actor wore a short-sleeved navy blue shirt and his husband wore the same one in yellow.
Arrival: Actress Kathryn Newton was among the guests at Wednesday’s high-profile event
Hair factor: The 26-year-old actress rocked a flirty updo for the occasion, pulling her blonde hair into a chic top knot bun
Brow game: Newton’s thick, dark eyebrows framed her face and she accentuated her lips with a bright red matte lipstick
Looking good: Neil Patrick Harris and husband David Burtka also enjoyed the lavish celebrity party
Party people: Cheryl James and Sandra Denton of hip-hop group Salt-N-Pepa were around for the festivities as well
Both Newton, Harris, and Hilton were returning guests at the glitzy affair.
Since 2021, Tod’s has hosted a medley of high-profile guests at a private oceanside residence.
The yearly summer celebration was spawned to laud the revered brand’s Hampton boutique. H
The exclusive partygoers are treated cocktails and hors d’oeuvres before sitting down for a formal meal.
Last year’s musical guest of honor was superstar Wyclef Jean, who performed a live set for guests.
