The couple laid a wreath on Graham’s casket, which lay in Washington.
Paying her respects, Melania wore funeral-black for the occasion, although she did have her legs on display.
The First Lady wore a princess coat with a fur collar and kept her hands covered in black leather gloves.
She completed the look with black court shoes. Her legs, however, were not covered, and her tanned calves could be seen.
As usual, Melania wore her hair loosely over her shoulders, and opted for her signature smoky eye makeup.
Ceremonies were held in the U.S. Capitol Rotunda to remember the Reverend Billy Graham, who died last month.
Known as “America’s pastor”, his funeral will be held in Charlotte, North Carolina, tomorrow.
All six living President’s are expected to attend, alongside 2,300 mourners.
The Queen may even be in attendance, although her spokesman refused to comment.
Melania has had a busy week, attending the Governor’s Ball on Sunday night in The White House.
The mum-of-one opted for a custom made floor length lace Dolce & Gabbana gown, which featured sequin accents throughout.
While the lace showed her arms and décolletage, a black under-dress kept most of Melania’s body covered.
She also made a rare speech on Monday at The Governor Spouses Luncheaon about the student movement for action on guns after the shooting at Majory Stonemason Douglas High School.
The incident left 17 dead, and a result, the First Lady launched a national conversation on gun violence.
During her speech, Melania said as a parent, she cannot imagine the kind of grief a tragedy like that brings, and that we all find ourselves wondering what we can do to help.