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Casual look: Lady Gaga hit the streets in a bra, underwear, fishnet stockings and giant platforms for an appearance on The Late Show With David Letterman on Wednesday

What’s that? It was the ring on Gaga’s left hand that courted the most attention

Bow-tiful: Gaga’s ring featured a gold band and a diamond bow detail

To fend off the Manhattan chill the 28-year-old covered up just slightly with a black motorcycle jacket.

She donned an enormous chartreuse bouffant wig with a full face of make-up which was slightly obscured behind a pair of black sunglasses.

Looking like a cross between Married With Children’s Peg Bundy and Sandy from Grease, the eccentric artist created quite the spectacle as she taped her segment with David Letterman.

But it wasn’t Gaga’s sartorial choices that courted the most attention.

Instead, all eyes were drawn to the diamond ring Gaga was sporting on her left hand as she signed autographs for fans.

The design featured a gold band and a diamond bow detail – a less traditional kind of engagement ring, but one suited to a singer as eccentric as Gaga.

Easy does it: She negotiated the sidewalk in her towering platforms

Helping hand: Gaga, Bill Murray and Letterman all skipped along together

Lady Gaga takes to the streets with David LettermanLoaded: 0%Progress: 0%0:00PreviousPlaySkipMuteCurrent Time0:00/Duration Time1:15FullscreenNeed Text

It remains to be seen whether or not Gaga is engaged – and what she would wear down the aisle – but she has been in a relationship with actor Taylor Kinney since 2011.

Speaking previously about their romance, Taylor said: ‘For whatever reason it just works … and that’s that.’

MailOnline has contacted a spokesperson for Gaga for comment on the engagement reports.

Take it all in: You don’t see Lady Gaga and David Letterman holding hands everyday

New friends: Gaga and David Letterman walk hand in hand down the street

Causing a scene: Fans snapped pics as the duo maneuvered on their way

Lost In Translation: Bill Murray also got in on the fun

Good times: Bill points at Lady Gaga’s towering platforms

Hysterical: The 63-year-old was in great spirits with Mother Monster

With a big smile across his face, the 66-year-old held Lady Gaga’s hand as they walked passed the throngs of fans.

At another point, she and Dave were joined by actor Bill Murray.

The 63-year-old also grabbed a hold of one of the singer’s hands and three made their way down the barricaded street.

All sides: She displayed her slender figure from all angles

Big hair, don’t care: Her chartreuse bouffant wig and full face of make-up complemented the outlandish outfit

Just another day: Dave wore a classic navy blue suit which balanced Lady Gaga’s more absurd attire

After her appearance on the late-night show, she changed into a different ensemble consisting of a conservative pale pink chiffon trench, long brown wig and a classic black tote in her right hand.

Her understated glamour was a welcome change from her usual theatrics.

Earlier in the day, Gaga emerged from a New York City rose-adorned taxi cab wearing a floral mini dress which displayed her slender legs in slightly more demure fashion.

Taking to the stage: Gaga delighted fans with her performance at the Roseland Ballroom

Getting up close and personal: At one point during the show, Gaga climbed a ladder to get closer to her fans

Heading home: Gaga wore a sequinned trouser suit and towering heels as she headed home after the show

She balanced her tiny frame in a pair of sky high tan stilettos while holding a tea cup in her gloved hands.

Her wig of choice consisted of a simple reddish mane with wavy curls at the ends and accessorized with a pair of oval sunglasses.

She was seen riding in the taxi cab with MTV host Sway.

Demure: After her appearance on the talk show she changed into a pale pink chiffon trench and brown wig

Pretty in pink: The more classic look was a welcome change from her usual theatrics

Bold: The 28-year-old wore red lipstick and carried a classic black tote for her stylish exit

The ArtPop hitmaker is currently in the middle of a seven-night residency at Roseland Ballroom, which will end with the closing of the legendary New York venue.

The residency ends April 7, and she’ll later kick off her ARTPOP Ball Tour May 4 at Florida’s BB&T Center in Ft. Lauderdale.

The 52nd Street theatre is closing its doors after 56 years, and the G.U.Y. singer is the final performer to take the stage.

‘It’s basically the only room in the city I haven’t played,’ Gaga told The New Yorker earlier this week, noting that Manhattan clubs are ‘where I learned to be bold.’

The Roseland Ballroom will eventually be transformed into a 59-storey residential tower.

Tea time: Earlier in the day, she emerged in a short floral frock and holding a tea cup

Floral: She was decked out in oval sunglasses and white gloves for her first of three ensembles

Strike a pose: She stood patiently as MTV host Sway made his way ahead of her down the street

Taking a ride: Gaga and Sway chat it up in the backseat of the cab

Gentleman: Sway held the taxi door open for Lady Gaga as she made her way inside

Dainty: The ArtPop singer sipped on her tea in the middle of the street

Concerts: She is in the middle of a seven-night residency at Roseland Ballroom, which ends April 7