Melania Trump is in attendance at a reception for Gold Star families at the White House, marking her first public appearance since her surgery.

No photographs have yet emerged from the event but her Communications Director Stephanie Grisham told the Daily Caller the first lady is present.

Her attendance was listed on President Donald Trump's official schedule that came out Sunday night.

"THE PRESIDENT and FIRST LADY host Gold Star Families Memorial Day Reception," the item on the schedule read. It was scheduled to start at 5:30 p.m.

It's listed as closed to the press, meaning the media aren't allowed inside to document her appearance. It's unknown if the White House will release photographs of the occasion.

Sunday marked the 24th day she had not been seen in public since she underwent a kidney procedure.

The first lady will not accompany President Donald Trump to the G7 summit in Canada on Friday or to his historic summit in Singapore on June 12.

The first lady will not attend either of the prominent international events, Grisham told the DailyMail.com.

'She will not attend the G7 and there are no plans for her to travel to Singapore at this time,' Grisham said in a statement on Sunday evening.

Melania Trump, 48, was missing on Friday when the Trump family - Jared Kushner, Ivanka Trump, Donald Trump Jr., and Tiffany Trump - joined the president on his trip to Camp David.

There is no word on when she will appear in public again.

Melania Trump will not accompany President Donald Trump to the G7 summit in Canada on Friday or to his historic summit in Singapore on June 12

FAMILY REUNION! Tiffany Trump, White House Senior Advisor Jared Kushner and his wife Ivanka Trump leave the White House on Friday. The The family members were accompanying President Donald Trump to Camp David for the weekend but the first lady did not join them

Melania Trump did accompany President Trump to a G7 meeting in May of last year in Italy, where they attended a performance by La Scala Philharmonic Orchestra

Spouses often accompany leaders to G7 meetings. But Melania will not make the trip to Quebec on Friday, where President Trump is expected to get grief for his new tariff policy.

A year ago Melania joined her husband in Taormina, Italy, for a G7 meeting where she famously wore a $51,000 Dolce & Gabbana jacket. She participated in public appearances with the spouses of other G7 leaders, including a formal dinner and taking in a performance by La Scala Philharmonic Orchestra at the Ancient Theatre of Taormina.

She will also not attend the historic summit with South Korean President Kim Jung-Un in Singapore on June 12 where the president hopes to sign a nuclear disarmament deal.

The first lady has gone on other prominent international trips. She joined the president in Asia in November of last year and accompanied him to France in April of this year.

She also made a solo trip to Canada in September of last year to to lead the U.S. delegation to the Invictus Games, where she met with Prince Harry.

But she will be a notable non-presence for the White House to deal with on their next two big foreign trips.

The president boarded Marine One solo on Friday after a day where he met with North Korea's former top spy chief.

The family weekend getaway at the presidential retreat in Maryland came three weeks after she was in the hospital for a kidney procedure.

Melania Trump was last seen in public on May 10, when she joined her husband to welcome the return of three Americans who were being held captive in North Korea.

The first lady underwent an embolization procedure on Monday, May 14, likely to remove a cyst from her kidney. Her office said it was benign, or non-cancerous.

She spent a week in the hospital recovering at Walter Reed National Military Medical Center.

She returned to the White House on Saturday, May 19. Some medical professionals said the five-day hospitalization was long for such a procedure.

Melania Trump made a solo trip to Canada in September of last year to to lead the U.S. delegation to the Invictus Games, where she met with Prince Harry

Melania Trump went to China in November 2017 with President Trump. She is seen here with Peng Liyuan, wife of China's President Xi Jinping, in the Great Hall of the People in Beijing

Melania Trump posed with 4th graders at the Kyobashi Tsukiji elementary school in Tokyo during that November 2017 trip to Asia

She didn't join her husband at a White House sports and fitness event on Thursday, where Ivanka Trump was present with the president.

There have been reported sightings but no photographic evidence.

A CNBC reporter tweeted last week: 'Not that this will deter the conspiracy theorists, but I saw the First Lady walking with her aides in the West Wing yesterday afternoon.'

In a May 30 tweet, the first lady needled the media for speculating about her whereabouts.

'I see the media is working overtime speculating where I am & what I'm doing. Rest assured, I'm here at the @WhiteHouse w my family, feeling great, & working hard on behalf of children & the American people!'

However, the tweet only brought more questions, as President Trump has been known to use phrases like 'working overtime' in his own tweets.

The White House has swatted down some conspiracy theories that have popped up – including one that held she wasn't even in the White House.

The blog Showbiz411 quoted a source as saying the reason the first lady hasn't been seen in public in 21 days is because her mother, Amalija Knavs, is very ill.

A source told the gossip website: 'She's taking care of her mother,' who is battling a pretty serious illness.

'They're all at Bedminster,' the source said. 'Melania, her parents, Barron when he's not in school. She's (Melania) not in the White House.'

However, the first lady's office knocked down the report as 'false.'

'Everything about that blog is false and incorrect,' Grisham told the Dailymail.com.

Viktor and Amalija Knavs moved to the Washington DC area after Trump won the election to help care for their grandson, 12-year-old Barron Trump, who is in a local school.

Melania joined her husband in Taormina, Italy, for a G7 meeting where she participated in public appearances with the spouses of other G7 leaders including Joachim Sauer, husband of German Chancellor Angela Merkel; Malgorzata Tusk, wife of President of the European Council; Melania; Amanda Succi, wife of Catania's mayor; Enzo Bianco, Mayor of Catania

Melania joined her husband in Taormina, Italy, for a G7 meeting in May 2017 where she famously wore a $51,000 Dolce & Gabbana jacket

They are legal permanent residents of the United States and often travel with the Trumps.

The first lady's public absence and lack of photos of her working at the White House as she claims has led to multiple conspiracy theories.

Grisham told the DailyMail.com last week that the first lady has been meeting with her staff on the 'Be Best' initiative and working on upcoming projects like the annual White House congressional picnic and Fourth of July plans.

Conspiracy theories are growing and not likely to stop with the latest news of the first lady's absence.

Politico reported Wednesday there are a variety of conspiracy theories being banded about given Melania's absence: She's moved back to New York City, she's cooperating with special counsel Robert Mueller, she's living with the Obamas, working on a tell-all book or she had a secret nip and tuck that she's healing from.

There have been no indications on when she may been seen in public again and the two events she is working on are likely weeks away.

No date has been set for this year's congressional picnic but last year's took place on June 22 on the White House South Lawn. The White House traditionally hosts a big Fourth of July celebration.