(Cover) - EN Star Style - Kourtney Kardashian says an early morning workout sets her up for a good day.

The 31-year-old reality TV star shot to fame alongside family members including sisters Kim, 30, and Khlo, 26, in the programme Keeping Up with the Kardashians, and has gone on to appear in spin-offs such as Kourtney and Khlo Take Miami.

The beauty is famed for her toned physique, and admits she loves nothing more than starting the day with a fitness session. Kourtney is currently working hard on maintaining her washboard stomach and toned legs in preparation for hitting the beach.

My whole day is better when I workout in the mornings! Who else is in bikini body mode? (sic), queried the celebrity on social-networking site Twitter.

Kourtney has been keeping trim and flexible by adhering to the Pilates method, which is favoured by numerous other celebrities including Gwyneth Paltrow and Jennifer Aniston. The star also endorses the use of weight loss-dieting product Quick Trim.

Started my day with some Pilates and Quick Trim (sic), wrote Kourtney. (C) Cover Media