Sam Asghari and Britney Spears are getting married

Sources say Britney Spears and Sam Asghari may wed TODAY

Sources say the singer, 40, will marry her fiancé 

in an "intimate ceremony," according to TMZ

The outlet reports Britney's recent Instagram story contains

hints about her nuptials, which will have a "very exclusive guest list of about 100 guests."

Her video posted yesterday shows Britney arriving

at the airport in a Rolls Royce - complete with champagne

Only Britney's brother Bryan has been invited 

to the wedding, according to reports