Ramona Singer and Sonja Morgan were spotted filming the seventh season of Real Housewives of New York City in the Upper East Side on Tuesday.

The blonde socialites were lunching on Northern Italian fare at Nello while seated near the sidewalk on Madison Avenue.

Sonja - who turns 51 next month - looked sophisticated in a velvet and suede ensemble resembling English riding clothes.

Scroll down for video

'A stunning day on Madison ave filming with Sonja!' Ramona Singer and Sonja Morgan were spotted filming the seventh season of Real Housewives of New York City in the Upper East Side on Tuesday

Morgan has a 14-year-old daughter Quincy with ex-husband John, whose grandfather founded J.P. Morgan & Company.

Ramona - who turns 58 next month - donned a sleeveless white peplum dress with b&W open-toe platforms and floral jewelry.

Singer has a daughter Avery - who turns 20 next month - with estranged husband Mario, whom she filed divorce from in January.

Ladies who lunch! The blonde socialites were lunching on Northern Italian fare at Nello while seated near the sidewalk on Madison Avenue

Equestrian chic: Sonja - who turns 51 next month - looked sophisticated in a velvet and suede ensemble resembling English riding clothes

Manhattan woman: Ramona - who turns 58 next month - donned a sleeveless white peplum dress with b&W open-toe platforms and floral jewelry

'Been crazed all day!' On Monday, the RMS Fashion owner tweeted that she was 'crazed' during her first day filming, but 'so excited' for her gal pal Bethenny Frankel's return to the reality show

On Monday, the RMS Fashion owner tweeted that she was 'crazed' during her first day filming, but 'so excited' for her gal pal Bethenny Frankel's return to the reality show.

'OG hwives. @ramonasinger @Bravotv,' Frankel retweeted on Tuesday.

The former talk show host - who turns 44 next month - spent Tuesday evening at her Skinnygirl book bash alongside RHONY pal Countess LuAnn de Lesseps.

Frankel retweeted: 'OG hwives. @ramonasinger @Bravotv,' referring to the hip-hop slang for 'original gangsta'

Cheers! The former talk show host - who turns 44 next month - spent Tuesday evening at her Skinnygirl book bash alongside RHONY pal Countess LuAnn de Lesseps (M)

Paying tribute to the deceased designer: On Monday evening, Bethenny glammed up in a nude patterned Oscar de la Renta gown at the A-list Angel Ball

They ARE both single! The merry divorcée ended her night twerking Oscar winner Jamie Foxx onstage Cipriani Wall Street

On Monday evening, Bethenny glammed up in a nude patterned Oscar de la Renta gown at the A-list Angel Ball.

The merry divorcée ended her night twerking Oscar winner Jamie Foxx onstage Cipriani Wall Street.

According to E! Online - LuAnn, Carole Radziwill, Heather Thomson, and Kristen Taekman have also signed on for season seven - while prosthetic leg-tossing Aviva Drescher will not return.