Real Housewives of Beverly Hills star Kyle Richards has closed her sprawling Manhattan clothing boutique 14 months after opening and has squeezed her merchandise into the back of a family-run shoe store, DailyMail.com can reveal.

On Sunday, staff were seen frantically packing up the reality star's 1,800 sq ft Upper East Side boutique, Kyle by Alene Too, to move to smaller premises further down the street.

In 2015, when the most recent advertisement was posted for the space, it was leasing for $33,750 a month - $225 per square foot.

Their new home is in the back of The Shoebox, a family-run designer shoe chain with two locations in the city. It is the same size but cheaper at around $186 per sq foot.

Details of their partnership are unknown but, if splitting the rent 50/50, Kyle's team would be responsible for $27,900 a month, almost $6,000-a-month less.

The 49-year-old has not commented on the move but her business partner told DailyMail.com it was because a mystery retailer had been 'eyeing up' their large store and wanted to move in.

She would not say who was taking over the lease or what exactly incentivised them to move out so quickly but promised: 'Business is good!'

Going, going, gone: Kyle Richards' sprawling Upper East Side boutique is now empty

Beverly Hills-based Kyle Richards (above earlier this month) has not commented on the move

Kyle's merchandise has found a new home in The Shoebox's two Manhattan locations - Flatiron location and the Upper East Side.

The news came as a shock to the Beverly Hills Housewives who just last week were seen on screens mingling at a September fashion week party at the old store.

Lizzy Schwartz, Kyle's partner who works with her on all of her Alene Too boutiques, insisted there was nothing sinister behind it.

'Someone wanted my space, they had been eyeing it for a while. It all happened really fast. Business is good. I wouldn't have moved if it wasn't, I would have closed.

'It's going to be a bit smaller but this way we're in three stores.

'We're so lucky to have found a home in Shoebox,' she told DailyMail.com.

The third location is in Manhasset, on Long Island, where they will also operate out of a Shoebox location.

Rushed job: Kyle's business partner tells DailyMail.com the move was sudden and prompted by an offer from a mystery retailer who had been eyeing the space

A team of staff were seen packing up the last of the glamorous merchandise on Sunday

The huge,1,800 sq ft space was unoccupied this week after Kyle and her team packed up and shipped out. Its most recently advertised lease gave its monthly price at $33,750. The listing agent who organized that deal said he knew nothing of the change of hands

What a difference a few weeks make: On February 6, Kyle was spotted outside the store (left). It is pictured (right) this week

Richards' partner Lizzy Schwartz told DailyMail.com 'business is good' and it is down to someone else 'eyeing up' their old, leased space

She said that the Beverly Hills location, which frequently appears on the show, and their Southampton premises will remain unchanged along with their store in Boca Raton, Florida.

This was the sign in the window on Sunday, directing customers to the new space

The real estate agent who produced their deal was not aware of it when contacted on Wednesday afternoon, after Kyle's stock was all packed up and set up down the street.

The Shoebox renewed its lease on 3rd Avenue in November.

It is double the size as Kyle's old store and is split over two floors which include its 1800 sq ft street level boutique and an 1800 sq ft basement for storage.

It was being leased for $186 per square foot.

The change was fast and unexpected, according to Schwartz who said she was approached just two weeks ago by the mysterious new lease-holder. She would not name them and details of the deal are not public.

New home: They are now in the back of The Shoebox, a family-run designer shoe retailer with two locations in the city which will both stock Kyle's merchandise

A Shoebox sales rep said Kyle's merchandise had already moved in to the 'back ' of the store where it would get a 'big' show

Memories: In an episode of the show which was filmed in September, Kyle and Lisa Vanderpump fawned over the NYC location and its merchandise

The 49-year-old eyed-up a pair of jade earrings which she joked about giving herself a discount on

In recent episodes of her Bravo show, Kyle and her castmates shopped and frolicked in the Upper East Side location.

The episodes were filmed in September last year when several of the women's daughters walked in fashion week. Kyle hosted a part in her boutique to coincide with the glitzy occasion.

Beforehand, she was filmed shopping with co-star Lisa Vanderpump and eyeing up a pair of pricey jade earrings which she joked about giving herself a discount on.

The boutique business is not her only gig.

She recently produced the series American Woman to the ire of her famous sisters Kathy Hilton and Kim Richards who were angered that she had turned sensitive parts of their childhood into a sitcom.

Her husband Mauricio Umansky has also found enormous success with his real estate company The Agency.

Repeated requests for comment from Kyle's agent went unanswered.