Khloe Kardashian dropped 'Odom' from her name on Twitter today (27.09.13).

The 29-year-old reality star went by the name of Khloe Kardashian-Odom on the social networking site, but has hinted her four-year marriage to Lamar Odom is in major trouble after she changed her display name to just ''Khloe'' on the day of their wedding anniversary.

Their relationship has been under pressure amid a blizzard of rumours the basketball player has cheated on her with several woman and is a regular crack cocaine user.

Earlier this week, the 'Keeping Up with the Kardashians' also ditched her married name from her Instagram account where she has been posting inspirational messages such as, ''She smiles to mask the pain in the heart, she laughs to conceal the tears in her eyes,'' and ''Sometimes you just got to be your own little hero and save your own little heart''.

Khloe - who recently kicked Lamar out of their marital home - had reportedly given Lamar an ultimatum, stating that he either shows her a commitment to sort out his life or prepare himself for divorce. The deadline for her ultimatum was allegedly today.

A source said: ''Khloe is giving Lamar until their four-year wedding anniversary to show some sign he still wants to be in their marriage. If not she's filing for divorce.''